# Koa'ki Meiru (Yu-Gi-Oh! archetype)

Archetype profile: The "Koa'ki Meiru" archetype has 45 cards in the database: 25 Effect Monsters, 12 Spell Cards, 7 Trap Cards and 1 Token. Its monsters are 15 EARTH, 5 WIND, 3 WATER and 2 FIRE by Attribute, and 7 Rock, 3 Warrior, 2 Beast-Warrior, 2 Fiend, 2 Dragon, 2 Aqua, 2 Machine, 1 Insect, 1 Zombie, 1 Plant, 1 Sea Serpent and 1 Winged Beast by Type. Its first TCG card was released on 10 March 2009 and its most recent on 6 August 2020. Together its cards have 76 TCG printings. Its most-viewed cards on YGOPRODeck are Koa'ki Meiru Guardian, Koa'ki Meiru Drago, Koa'ki Meiru Supplier, Koa'ki Meiru Overload and Koa'ki Meiru Sandman. Monster ATK ranges from 1000 to 3000.

Cards in this archetype: Automatic Laser; Core Blast; Core Blaster; Core Compression; Core Overclock; Core Reinforcement; Core Transport Unit; Diamond Core of Koa'ki Meiru; Iron Core Armor; Iron Core Immediate Disposal; Iron Core Luster; Iron Core of Koa'ki Meiru; Iron Core Specimen Lab; Koa'ki Meiru Beetle; Koa'ki Meiru Bergzak; Koa'ki Meiru Boulder; Koa'ki Meiru Crusader; Koa'ki Meiru Doom; Koa'ki Meiru Drago; Koa'ki Meiru Ghoulungulate; Koa'ki Meiru Gravirose; Koa'ki Meiru Guardian; Koa'ki Meiru Hydro Barrier; Koa'ki Meiru Ice; Koa'ki Meiru Initialize!; Koa'ki Meiru Maximus; Koa'ki Meiru Overload; Koa'ki Meiru Powerhand; Koa'ki Meiru Prototype; Koa'ki Meiru Rooklord; Koa'ki Meiru Sandman; Koa'ki Meiru Sea Panther; Koa'ki Meiru Shield; Koa'ki Meiru Speeder; Koa'ki Meiru Supplier; Koa'ki Meiru Token; Koa'ki Meiru Tornado; Koa'ki Meiru Urnight; Koa'ki Meiru Valafar; Koa'ki Meiru Wall; Koa'ki Meiru War Arms; Koa'ki Ring; Nega-Ton Corepanel; Reckoned Power; Urgent Synthesis.

Part of the VanBanter Yu-Gi-Oh! knowledge layer (https://vanbanter.com/knowledge/index.txt). Card data, prices and banlists come from the YGOPRODeck database, version 147.60, updated 2026-10-25. "Listed" printing prices are the per-printing set prices YGOPRODeck publishes, in US dollars; YGOPRODeck does not state their source or date, and printings without one are shown unpriced. Card-level market prices are Cardmarket (euros), TCGplayer and eBay (US dollars). Prices move daily, so treat them as a snapshot.
VanBanter sells Yu-Gi-Oh! cards in live auctions on Whatnot with £1 starts: https://www.whatnot.com/user/vanbanter

## Automatic Laser
Passcode: 58990631 · Konami ID: 8226
Card type: Normal Trap
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: When your opponent Normal or Special Summons a monster(s) with 1000 or more ATK, reveal 1 "Iron Core of Koa'ki Meiru" in your hand to activate this card. Destroy that Summoned monster(s).
Summary: Automatic Laser is a Normal Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 5 formats: Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 26,385 times.
Printings (1):
- RGBT-EN074 · Raging Battle · Common · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.08 · TCGplayer $0.12 · eBay $0.99
Reference: https://ygoprodeck.com/card/automatic-laser-5018

## Core Blast
Passcode: 18517177 · Konami ID: 8683
Card type: Continuous Trap
Archetype: Koa'ki Meiru
First released: OCG 2009-11-14 · TCG 2010-02-12
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: You can only activate this card's effect while you control a face-up "Koa'ki Meiru" monster. Once per turn, during your Standby Phase, if your opponent controls more monsters than you do, you can destroy a number of cards your opponent controls so that your opponent will control the same number of cards as you control monsters.
Summary: Core Blast is a Continuous Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 November 2009 and in the TCG on 12 February 2010. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 16,533 times.
Printings (1):
- ABPF-EN072 · Absolute Powerforce · Rare · released 2010-02-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.18 · TCGplayer $0.12 · eBay $1.25
Reference: https://ygoprodeck.com/card/core-blast-1606

## Core Blaster
Passcode: 59385322 · Konami ID: 8343
Card type: Equip Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Equip only to a "Koa'ki Meiru" monster. If it battles a LIGHT or DARK monster, destroy that monster without applying damage calculation. When the equipped monster is removed from the field and this card is sent to the Graveyard, you can return this card to your hand.
Summary: Core Blaster is an Equip Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 21,386 times.
Printings (1):
- ANPR-EN053 · Ancient Prophecy · Common · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.05 · TCGplayer $0.11 · eBay $0.99
Reference: https://ygoprodeck.com/card/core-blaster-5049

## Core Compression
Passcode: 13997673 · Konami ID: 8342
Card type: Normal Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: Reveal 1 "Iron Core of Koa'ki Meiru" in your hand and discard 1 "Koa'ki Meiru" monster to activate this card. Draw 2 cards.
Summary: Core Compression is a Normal Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 19,499 times.
Printings (1):
- ANPR-EN052 · Ancient Prophecy · Super Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.43 · TCGplayer $0.96 · eBay $2.99
Reference: https://ygoprodeck.com/card/core-compression-1198

## Core Overclock
Passcode: 36560997 · Konami ID: 9034
Card type: Continuous Spell
Archetype: Koa'ki Meiru
First released: OCG 2011-09-17 · TCG 2010-05-07
Banlist: Unlimited on all tracked lists
Formats: Duel Links, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: All face-up "Koa'ki Meiru" monsters you control gain 500 ATK. Once per turn, during your Main Phase, you can discard 1 "Iron Core of Koa'ki Meiru" to have all face-up "Koa'ki Meiru" monsters you control gain 1000 ATK, until the End Phase.
Summary: Core Overclock is a Continuous Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 17 September 2011 and in the TCG on 7 May 2010. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 4 formats: Duel Links, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 20,230 times.
Printings (1):
- TSHD-EN087 · The Shining Darkness · Super Rare · released 2010-05-07
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.37 · TCGplayer $0.16 · eBay $2.50
Reference: https://ygoprodeck.com/card/core-overclock-3089

## Core Reinforcement
Passcode: 8057630 · Konami ID: 8363
Card type: Continuous Trap
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Select and Special Summon 1 "Koa'ki Meiru" monster from your Graveyard in Attack Position. When that monster is destroyed during your End Phase, the controller of this card takes damage equal to that monster's ATK. When this card is removed from the field, destroy that monster. When that monster is destroyed, destroy this card.
Summary: Core Reinforcement is a Continuous Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 29,416 times.
Printings (1):
- ANPR-EN073 · Ancient Prophecy · Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.14 · TCGplayer $0.20 · eBay $0.99
Reference: https://ygoprodeck.com/card/core-reinforcement-683

## Core Transport Unit
Passcode: 30770156 · Konami ID: 8762
Card type: Continuous Spell
Archetype: Koa'ki Meiru
First released: OCG 2010-09-18 · TCG 2010-02-12
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: Once per turn, you can discard 1 card to add 1 "Iron Core of Koa'ki Meiru" from your Deck to your hand.
Summary: Core Transport Unit is a Continuous Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 September 2010 and in the TCG on 12 February 2010. It has 1 TCG printing across 1 product, in 1 rarity: Secret Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 21,198 times.
Printings (1):
- ABPF-EN089 · Absolute Powerforce · Secret Rare · released 2010-02-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €22.78 · TCGplayer $14.29 · eBay $3.33
Reference: https://ygoprodeck.com/card/core-transport-unit-2613

## Diamond Core of Koa'ki Meiru
Passcode: 81994591 · Konami ID: 11094
Card type: Normal Spell
Archetype: Koa'ki Meiru
First released: OCG 2014-02-15 · TCG 2014-05-16
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, TCG, OCG, Master Duel
Master Duel rarity: Ultra Rare
Card text: Add 1 "Koa'ki Meiru" card from your Deck to your hand, except "Diamond Core of Koa'ki Meiru". You can banish this card from your Graveyard; for the rest of this turn, "Koa'ki Meiru" monsters you control cannot be destroyed.
Summary: Diamond Core of Koa'ki Meiru is a Normal Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 15 February 2014 and in the TCG on 16 May 2014. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 5 formats: Duel Links, Common Charity, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 52,499 times.
Printings (1):
- PRIO-EN065 · Primal Origin · Common · released 2014-05-16
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.19 · TCGplayer $0.26 · eBay $0.99
Reference: https://ygoprodeck.com/card/diamond-core-of-koa-ki-meiru-6888

## Iron Core Armor
Passcode: 20457551 · Konami ID: 8488
Card type: Equip Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-07-18 · TCG 2009-11-17
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Equip only to a "Koa'ki Meiru" monster. During damage calculation only, monsters that battle with the equipped monster lose ATK equal to the equipped monster's Level x 100. If the equipped monster would be destroyed during the End Phase, you can send this card to the Graveyard instead.
Summary: Iron Core Armor is an Equip Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 July 2009 and in the TCG on 17 November 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 21,129 times.
Printings (1):
- SOVR-EN053 · Stardust Overdrive · Common · released 2009-11-17
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.16 · TCGplayer $0.11 · eBay $0.99
Reference: https://ygoprodeck.com/card/iron-core-armor-1759

## Iron Core Immediate Disposal
Passcode: 63018036 · Konami ID: 8208
Card type: Normal Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Select and send 1 "Iron Core of Koa'ki Meiru" from your Deck to your Graveyard.
Summary: Iron Core Immediate Disposal is a Normal Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 25,463 times.
Printings (1):
- RGBT-EN056 · Raging Battle · Common · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.12 · TCGplayer $0.13 · eBay $0.99
Reference: https://ygoprodeck.com/card/iron-core-immediate-disposal-5322

## Iron Core Luster
Passcode: 34545235 · Konami ID: 8364
Card type: Counter Trap
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Reveal 1 "Iron Core of Koa'ki Meiru" in your hand. Negate the activation of your opponent's Spell or Trap Card, and destroy it.
Summary: Iron Core Luster is a Counter Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 27,976 times.
Printings (1):
- ANPR-EN074 · Ancient Prophecy · Common · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.10 · TCGplayer $0.19 · eBay $0.99
Reference: https://ygoprodeck.com/card/iron-core-luster-2936

## Iron Core of Koa'ki Meiru
Passcode: 36623431 · Konami ID: 8207
Card type: Normal Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-03-10
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During your Draw Phase, if this card is in your Graveyard, you can add this card to your hand instead of drawing, and/or send 1 "Koa'ki Meiru" monster from your hand to your Graveyard to add this card to your hand.
Summary: Iron Core of Koa'ki Meiru is a Normal Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 10 March 2009. It has 3 TCG printings across 3 products, in 3 rarities: Ultra Rare, Rare and Common. The earliest is RGBT-ENPP1 in Duelist Pack Collection Tin 2009 (10 March 2009); the most recent is TU02-EN020 in Turbo Pack: Booster Two (9 January 2010). It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 51,130 times.
Printings (3):
- RGBT-ENPP1 · Duelist Pack Collection Tin 2009 · Ultra Rare · released 2009-03-10 · listed $2.42
- RGBT-EN055 · Raging Battle · Rare · released 2009-05-12
- TU02-EN020 · Turbo Pack: Booster Two · Common · released 2010-01-09
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.15 · TCGplayer $0.21 · eBay $0.99
Reference: https://ygoprodeck.com/card/iron-core-of-koa-ki-meiru-3096

## Iron Core Specimen Lab
Passcode: 53039326 · Konami ID: 8666
Card type: Field Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-11-14 · TCG 2010-02-12
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During each of your End Phases, destroy this card unless you reveal 1 "Iron Core of Koa'ki Meiru" in your hand. Each time a "Koa'ki Meiru" monster on the field is destroyed during the End Phase, its owner can add 1 "Koa'ki Meiru" monster from their Deck to their hand.
Summary: Iron Core Specimen Lab is a Field Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 November 2009 and in the TCG on 12 February 2010. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 23,570 times.
Printings (1):
- ABPF-EN055 · Absolute Powerforce · Super Rare · released 2010-02-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.73 · TCGplayer $0.46 · eBay $1.24
Reference: https://ygoprodeck.com/card/iron-core-specimen-lab-4516

## Koa'ki Meiru Beetle
Passcode: 39037517 · Konami ID: 8593
Card type: Effect Monster [Insect / Effect]
Stats: EARTH · Level 4 · ATK 1900 / DEF 1500
Archetype: Koa'ki Meiru
First released: OCG 2010-09-18 · TCG 2009-11-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Insect-Type monster in your hand. If a LIGHT or DARK monster is Special Summoned in Attack Position: Change that monster to Defense Position.
Summary: Koa'ki Meiru Beetle is a Level 4 EARTH Insect Effect Monster with 1900 ATK and 1500 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 September 2010 and in the TCG on 1 November 2009. It has 4 TCG printings across 3 products, in 4 rarities: Ultra Rare, Super Rare, Rare and Shatterfoil Rare. The earliest is SOVR-ENSP1 in Stardust Overdrive Sneak Peek Participation Card (1 November 2009); the most recent is BP03-EN066 in Battle Pack 3: Monster League (31 July 2014). It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 35,364 times.
Printings (4):
- SOVR-ENSP1 · Stardust Overdrive Sneak Peek Participation Card · Ultra Rare · released 2009-11-01 · listed $1.19
- SOVR-EN000 · Stardust Overdrive · Super Rare · released 2009-11-17
- BP03-EN066 · Battle Pack 3: Monster League · Rare · released 2014-07-31
- BP03-EN066 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.24 · TCGplayer $0.13 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-beetle-3311

## Koa'ki Meiru Bergzak
Passcode: 80367387 · Konami ID: 8516
Card type: Effect Monster [Warrior / Effect]
Stats: EARTH · Level 4 · ATK 2000 / DEF 200
Archetype: Koa'ki Meiru
First released: OCG 2009-04-21 · TCG 2010-05-07
Banlist: Unlimited on all tracked lists
Formats: Duel Links, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Warrior-Type monster in your hand. If this card destroys an opponent's monster by battle, it can attack once again in a row.
Summary: Koa'ki Meiru Bergzak is a Level 4 EARTH Warrior Effect Monster with 2000 ATK and 200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 21 April 2009 and in the TCG on 7 May 2010. It has 1 TCG printing across 1 product, in 1 rarity: Secret Rare. It is available in 4 formats: Duel Links, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 33,571 times.
Printings (1):
- TSHD-EN099 · The Shining Darkness · Secret Rare · released 2010-05-07
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €5.40 · TCGplayer $3.70 · eBay $11.00
Reference: https://ygoprodeck.com/card/koa-ki-meiru-bergzak-6741

## Koa'ki Meiru Boulder
Passcode: 6320631 · Konami ID: 8309
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1200 / DEF 1000
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: When this card is destroyed by battle and sent to the Graveyard, you can add 1 "Iron Core of Koa'ki Meiru" or 1 Level 4 or lower "Koa'ki Meiru" monster from your Deck to your hand.
Summary: Koa'ki Meiru Boulder is a Level 4 EARTH Rock Effect Monster with 1200 ATK and 1000 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 37,157 times.
Printings (1):
- ANPR-EN018 · Ancient Prophecy · Common · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.14 · TCGplayer $0.18 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-boulder-554

## Koa'ki Meiru Crusader
Passcode: 32314730 · Konami ID: 8310
Card type: Effect Monster [Beast-Warrior / Effect]
Stats: EARTH · Level 4 · ATK 1900 / DEF 1300
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Beast-Warrior-Type monster in your hand. If this card destroys an opponent's monster by battle, you can add 1 "Koa'ki Meiru" card from your Graveyard to your hand.
Summary: Koa'ki Meiru Crusader is a Level 4 EARTH Beast-Warrior Effect Monster with 1900 ATK and 1300 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 32,164 times.
Printings (1):
- ANPR-EN019 · Ancient Prophecy · Super Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €3.28 · TCGplayer $6.23 · eBay $2.90
Reference: https://ygoprodeck.com/card/koa-ki-meiru-crusader-2745

## Koa'ki Meiru Doom
Passcode: 80925836 · Konami ID: 8178
Card type: Effect Monster [Fiend / Effect]
Stats: WIND · Level 3 · ATK 1700 / DEF 800
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Fiend-Type monster in your hand. Negate the effects of LIGHT and DARK monsters that activate during the Main Phase.
Summary: Koa'ki Meiru Doom is a Level 3 WIND Fiend Effect Monster with 1700 ATK and 800 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 3 TCG printings across 2 products, in 3 rarities: Common, Rare and Shatterfoil Rare. The earliest is RGBT-EN026 in Raging Battle (12 May 2009); the most recent is BP03-EN058 in Battle Pack 3: Monster League (31 July 2014). It is available in 5 formats: Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 64,554 times.
Printings (3):
- RGBT-EN026 · Raging Battle · Common · released 2009-05-12
- BP03-EN058 · Battle Pack 3: Monster League · Rare · released 2014-07-31
- BP03-EN058 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.12 · TCGplayer $0.22 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-doom-6792

## Koa'ki Meiru Drago
Passcode: 12435193 · Konami ID: 8176
Card type: Effect Monster [Dragon / Effect]
Stats: WIND · Level 4 · ATK 1900 / DEF 1600
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Dragon-Type monster in your hand. Neither player can Special Summon LIGHT or DARK monsters.
Summary: Koa'ki Meiru Drago is a Level 4 WIND Dragon Effect Monster with 1900 ATK and 1600 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 8 TCG printings across 5 products, in 7 rarities: Ultimate Rare, Ultra Rare, Common, Rare, Shatterfoil Rare, Platinum Secret Rare and Quarter Century Secret Rare. The earliest is RGBT-EN024 in Raging Battle (12 May 2009); the most recent is RA03-EN218 in Quarter Century Bonanza (7 November 2024). It is available in 5 formats: Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 323,063 times.
Printings (8):
- RGBT-EN024 · Raging Battle · Ultimate Rare · released 2009-05-12
- RGBT-EN024 · Raging Battle · Ultra Rare · released 2009-05-12
- TU03-EN015 · Turbo Pack: Booster Three · Common · released 2010-07-10
- BP03-EN057 · Battle Pack 3: Monster League · Rare · released 2014-07-31
- BP03-EN057 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
- BLAR-EN059 · Battles of Legend: Armageddon · Ultra Rare · released 2020-07-23
- RA03-EN218 · Quarter Century Bonanza · Platinum Secret Rare · released 2024-11-07
- RA03-EN218 · Quarter Century Bonanza · Quarter Century Secret Rare · released 2024-11-07
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €1.53 · TCGplayer $1.14 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-drago-1072

## Koa'ki Meiru Ghoulungulate
Passcode: 5817857 · Konami ID: 8523
Card type: Effect Monster [Zombie / Effect]
Stats: EARTH · Level 5 · ATK 2500 / DEF 1700
Archetype: Koa'ki Meiru
First released: OCG 2010-09-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Zombie-Type monster in your hand. If a "Koa'ki Meiru" monster you control would be destroyed by battle or by a card effect, you can remove from play 1 "Koa'ki Meiru" monster in your Graveyard instead.
Summary: Koa'ki Meiru Ghoulungulate is a Level 5 EARTH Zombie Effect Monster with 2500 ATK and 1700 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 September 2010 and in the TCG on 1 September 2009. It has 2 TCG printings across 1 product, in 2 rarities: Ultimate Rare and Ultra Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 26,823 times.
Printings (2):
- ANPR-EN082 · Ancient Prophecy · Ultimate Rare · released 2009-09-01
- ANPR-EN082 · Ancient Prophecy · Ultra Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €1.03 · TCGplayer $0.50 · eBay $1.04
Reference: https://ygoprodeck.com/card/koa-ki-meiru-ghoulungulate-511

## Koa'ki Meiru Gravirose
Passcode: 41201555 · Konami ID: 8524
Card type: Effect Monster [Plant / Effect]
Stats: FIRE · Level 4 · ATK 1900 / DEF 1300
Archetype: Koa'ki Meiru
First released: OCG 2010-09-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Plant-Type monster in you hand. During each of your Standby Phases, you can send 1 Level 3 or lower monster from your Deck to your Graveyard.
Summary: Koa'ki Meiru Gravirose is a Level 4 FIRE Plant Effect Monster with 1900 ATK and 1300 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 September 2010 and in the TCG on 1 September 2009. It has 2 TCG printings across 1 product, in 2 rarities: Ultimate Rare and Ultra Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 64,623 times.
Printings (2):
- ANPR-EN083 · Ancient Prophecy · Ultimate Rare · released 2009-09-01
- ANPR-EN083 · Ancient Prophecy · Ultra Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €7.79 · TCGplayer $12.37 · eBay $11.39
Reference: https://ygoprodeck.com/card/koa-ki-meiru-gravirose-3515

## Koa'ki Meiru Guardian
Passcode: 45041488 · Konami ID: 8175
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1900 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-03-10
Banlist: Unlimited on all tracked lists
Formats: Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Rock monster in your hand. When a monster effect is activated (Quick Effect): You can Tribute this card; negate the activation, and if you do, destroy that monster.
Summary: Koa'ki Meiru Guardian is a Level 4 EARTH Rock Effect Monster with 1900 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 10 March 2009. It has 5 TCG printings across 4 products, in 4 rarities: Super Rare, Common, Rare and Shatterfoil Rare. The earliest is RGBT-ENPP3 in Duelist Pack Collection Tin 2009 (10 March 2009); the most recent is SESL-EN048 in Secret Slayers (3 April 2020). The highest set price YGOPRODeck lists is for the Super Rare RGBT-ENPP3 at $3.38; the lowest is the Super Rare SESL-EN048 at $1.83. It is available in 5 formats: Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 500,633 times.
Printings (5):
- RGBT-ENPP3 · Duelist Pack Collection Tin 2009 · Super Rare · released 2009-03-10 · listed $3.38
- RGBT-EN023 · Raging Battle · Common · released 2009-05-12
- BP03-EN056 · Battle Pack 3: Monster League · Rare · released 2014-07-31
- BP03-EN056 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
- SESL-EN048 · Secret Slayers · Super Rare · released 2020-04-03 · listed $1.83
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €1.18 · TCGplayer $1.68 · eBay $1.49
Reference: https://ygoprodeck.com/card/koa-ki-meiru-guardian-3840

## Koa'ki Meiru Hydro Barrier
Passcode: 31692182 · Konami ID: 8313
Card type: Effect Monster [Aqua / Effect]
Stats: WATER · Level 3 · ATK 1000 / DEF 1900
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: You can return 1 "Iron Core of Koa'ki Meiru" from your hand to the top of the Deck. If you do, the effect(s) of all face-up Effect Monsters are negated until the Standby Phase of your next turn, except "Koa'ki Meiru" monsters.
Summary: Koa'ki Meiru Hydro Barrier is a Level 3 WATER Aqua Effect Monster with 1000 ATK and 1900 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 30,290 times.
Printings (1):
- ANPR-EN022 · Ancient Prophecy · Common · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.11 · TCGplayer $0.12 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-hydro-barrier-2689

## Koa'ki Meiru Ice
Passcode: 54520292 · Konami ID: 8177
Card type: Effect Monster [Aqua / Effect]
Stats: WATER · Level 4 · ATK 1900 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Continuous Spell Card in your hand. You can send 1 card from your hand to the Graveyard to destroy 1 Special Summoned monster on the field.
Summary: Koa'ki Meiru Ice is a Level 4 WATER Aqua Effect Monster with 1900 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 32,781 times.
Printings (1):
- RGBT-EN025 · Raging Battle · Rare · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.27 · TCGplayer $0.43 · eBay $2.07
Reference: https://ygoprodeck.com/card/koa-ki-meiru-ice-4643

## Koa'ki Meiru Initialize!
Passcode: 91985515 · Konami ID: 8833
Card type: Quick-Play Spell
Archetype: Koa'ki Meiru
First released: OCG 2010-02-20 · TCG 2010-05-07
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Tribute 1 "Koa'ki Meiru" monster to add 1 "Iron Core of Koa'ki Meiru" from your Deck or Graveyard to your hand.
Summary: Koa'ki Meiru Initialize! is a Quick-Play Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 20 February 2010 and in the TCG on 7 May 2010. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 5 formats: Duel Links, Common Charity, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 19,748 times.
Printings (1):
- TSHD-EN058 · The Shining Darkness · Common · released 2010-05-07
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.16 · TCGplayer $0.09 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-initialize-7668

## Koa'ki Meiru Maximus
Passcode: 65026212 · Konami ID: 8594
Card type: Effect Monster [Dragon / Effect]
Stats: WIND · Level 8 · ATK 3000 / DEF 2500
Archetype: Koa'ki Meiru
First released: OCG 2010-09-18 · TCG 2009-11-17
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Ultra Rare
Card text: This card cannot be Normal Summoned or Set. This card can only be Special Summoned by removing from play 1 "Iron Core of Koa'ki Meiru" from your hand. During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" or 1 "Koa'ki Meiru" monster from your hand to the Graveyard. Once per turn, during your Main Phase, you can select and destroy 1 card your opponent controls.
Summary: Koa'ki Meiru Maximus is a Level 8 WIND Dragon Effect Monster with 3000 ATK and 2500 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 September 2010 and in the TCG on 17 November 2009. It has 2 TCG printings across 1 product, in 2 rarities: Ultimate Rare and Ultra Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 38,267 times.
Printings (2):
- SOVR-EN081 · Stardust Overdrive · Ultimate Rare · released 2009-11-17
- SOVR-EN081 · Stardust Overdrive · Ultra Rare · released 2009-11-17
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €2.42 · TCGplayer $1.29 · eBay $3.00
Reference: https://ygoprodeck.com/card/koa-ki-meiru-maximus-5482

## Koa'ki Meiru Overload
Passcode: 14309486 · Konami ID: 11553
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1900 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2014-11-15 · TCG 2015-01-15
Banlist: Unlimited on all tracked lists
Formats: TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Rock monster in your hand. When your opponent would Summon a monster(s) (Quick Effect): You can Tribute this card; negate the Summon, and if you do, destroy that monster(s).
Summary: Koa'ki Meiru Overload is a Level 4 EARTH Rock Effect Monster with 1900 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 15 November 2014 and in the TCG on 15 January 2015. It has 2 TCG printings across 2 products, in 2 rarities: Rare and Super Rare. The earliest is SECE-EN033 in Secrets of Eternity (15 January 2015); the most recent is SESL-EN051 in Secret Slayers (3 April 2020). It is available in 3 formats: TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 95,952 times.
Printings (2):
- SECE-EN033 · Secrets of Eternity · Rare · released 2015-01-15
- SESL-EN051 · Secret Slayers · Super Rare · released 2020-04-03 · listed $1.30
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.18 · TCGplayer $0.18 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-overload-1226

## Koa'ki Meiru Powerhand
Passcode: 19642889 · Konami ID: 8174
Card type: Effect Monster [Machine / Effect]
Stats: EARTH · Level 4 · ATK 2100 / DEF 1600
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Normal Trap Card in your hand. If this card battles a LIGHT or DARK monster, any of that monster's effects that activate or apply on the field are negated during that Battle Phase, while this card remains on the field.
Summary: Koa'ki Meiru Powerhand is a Level 4 EARTH Machine Effect Monster with 2100 ATK and 1600 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 32,713 times.
Printings (1):
- RGBT-EN022 · Raging Battle · Super Rare · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.79 · TCGplayer $1.77 · eBay $1.89
Reference: https://ygoprodeck.com/card/koa-ki-meiru-powerhand-1692

## Koa'ki Meiru Prototype
Passcode: 176392 · Konami ID: 9033
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1800 / DEF 1800
Archetype: Koa'ki Meiru
First released: OCG 2011-09-17 · TCG 2010-05-07
Banlist: Unlimited on all tracked lists
Formats: Duel Links, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: If a face-up "Koa'ki Meiru" monster(s) on the field would be destroyed during the End Phase, you can destroy this card instead. When a face-up "Koa'ki Meiru" monster(s) on the field is destroyed during the End Phase, you can Special Summon 1 "Koa'ki Meiru Token" (Rock-Type/EARTH/Level 4/ATK 1800/DEF 1800).
Summary: Koa'ki Meiru Prototype is a Level 4 EARTH Rock Effect Monster with 1800 ATK and 1800 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 17 September 2011 and in the TCG on 7 May 2010. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 4 formats: Duel Links, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 26,437 times.
Printings (1):
- TSHD-EN082 · The Shining Darkness · Rare · released 2010-05-07
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.17 · TCGplayer $0.22 · eBay $1.29
Reference: https://ygoprodeck.com/card/koa-ki-meiru-prototype-18

## Koa'ki Meiru Rooklord
Passcode: 10060427 · Konami ID: 8463
Card type: Effect Monster [Warrior / Effect]
Stats: EARTH · Level 7 · ATK 2800 / DEF 2200
Archetype: Koa'ki Meiru
First released: OCG 2009-07-18 · TCG 2009-11-17
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Ultra Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Warrior-Type monster in your hand. You can Tribute Summon this card by Tributing 1 "Koa'ki Meiru" monster. When this card is Normal Summoned, you can remove from play 1 "Koa'ki Meiru" card in your Graveyard to destroy up to 2 cards your opponent controls.
Summary: Koa'ki Meiru Rooklord is a Level 7 EARTH Warrior Effect Monster with 2800 ATK and 2200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 July 2009 and in the TCG on 17 November 2009. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 28,459 times.
Printings (1):
- SOVR-EN028 · Stardust Overdrive · Super Rare · released 2009-11-17
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.90 · TCGplayer $0.79 · eBay $1.49
Reference: https://ygoprodeck.com/card/koa-ki-meiru-rooklord-871

## Koa'ki Meiru Sandman
Passcode: 49680980 · Konami ID: 8804
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1900 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2010-02-20 · TCG 2010-05-07
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Rock monster in your hand. When your opponent activates a Trap Card (Quick Effect): You can Tribute this card; negate the activation, and if you do, destroy that card.
Summary: Koa'ki Meiru Sandman is a Level 4 EARTH Rock Effect Monster with 1900 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 20 February 2010 and in the TCG on 7 May 2010. It has 4 TCG printings across 3 products, in 4 rarities: Common, Rare, Shatterfoil Rare and Super Rare. The earliest is TSHD-EN028 in The Shining Darkness (7 May 2010); the most recent is SESL-EN049 in Secret Slayers (3 April 2020). It is available in 5 formats: Duel Links, Common Charity, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 75,880 times.
Printings (4):
- TSHD-EN028 · The Shining Darkness · Common · released 2010-05-07
- BP03-EN072 · Battle Pack 3: Monster League · Rare · released 2014-07-31
- BP03-EN072 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
- SESL-EN049 · Secret Slayers · Super Rare · released 2020-04-03 · listed $1.43
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.12 · TCGplayer $0.12 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-sandman-4233

## Koa'ki Meiru Sea Panther
Passcode: 74576482 · Konami ID: 8462
Card type: Effect Monster [Sea Serpent / Effect]
Stats: WATER · Level 4 · ATK 1900 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2009-07-18 · TCG 2009-11-17
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 WATER monster in your hand. Once per turn, you can send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard to return 1 Spell Card from your Graveyard to the top of your Deck.
Summary: Koa'ki Meiru Sea Panther is a Level 4 WATER Sea Serpent Effect Monster with 1900 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 July 2009 and in the TCG on 17 November 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 34,073 times.
Printings (1):
- SOVR-EN027 · Stardust Overdrive · Common · released 2009-11-17
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.14 · TCGplayer $0.11 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-sea-panther-6265

## Koa'ki Meiru Shield
Passcode: 12216615 · Konami ID: 8852
Card type: Normal Trap
Archetype: Koa'ki Meiru
First released: OCG 2010-02-20 · TCG 2010-05-07
Banlist: Unlimited on all tracked lists
Formats: Duel Links, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: Activate only when your opponent's monster declares an attack if you have 2 or more "Iron Core of Koa'ki Meiru" in your Graveyard. Destroy all face-up Attack Position monsters your opponent controls.
Summary: Koa'ki Meiru Shield is a Normal Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 20 February 2010 and in the TCG on 7 May 2010. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 4 formats: Duel Links, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 14,821 times.
Printings (1):
- TSHD-EN077 · The Shining Darkness · Rare · released 2010-05-07
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.35 · TCGplayer $0.11 · eBay $1.25
Reference: https://ygoprodeck.com/card/koa-ki-meiru-shield-1054

## Koa'ki Meiru Speeder
Passcode: 68809475 · Konami ID: 8311
Card type: Effect Monster [Machine / Effect]
Stats: WIND · Level 3 · ATK 1200 / DEF 2200
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Machine-Type monster in your hand. If you draw "Iron Core of Koa'ki Meiru" during your Draw Phase, you can reveal it to your opponent to draw 1 more card.
Summary: Koa'ki Meiru Speeder is a Level 3 WIND Machine Effect Monster with 1200 ATK and 2200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 24,346 times.
Printings (1):
- ANPR-EN020 · Ancient Prophecy · Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.13 · TCGplayer $0.14 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-speeder-5778

## Koa'ki Meiru Supplier
Passcode: 80839052 · Konami ID: 15264
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1400 / DEF 1600
Archetype: Koa'ki Meiru
First released: OCG 2020-04-18 · TCG 2020-08-06
Banlist: Unlimited on all tracked lists
Formats: TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: If a face-up Rock monster you control is sent to the GY (except during the Damage Step): You can Special Summon this card from your hand. If this card is Special Summoned: You can add from your Deck to your hand, 1 "Iron Core of Koa'ki Meiru" or 1 card that specifically lists "Iron Core of Koa'ki Meiru" in its text, except "Koa'ki Meiru Supplier". You can only use each effect of "Koa'ki Meiru Supplier" once per turn.
Summary: Koa'ki Meiru Supplier is a Level 4 EARTH Rock Effect Monster with 1400 ATK and 1600 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2020 and in the TCG on 6 August 2020. It has 2 TCG printings across 2 products, in 2 rarities: Ultra Rare and Secret Rare. The earliest is ROTD-EN030 in Rise of the Duelist (6 August 2020); the most recent is BLCR-EN080 in Battles of Legend: Crystal Revenge (17 November 2022). It is available in 3 formats: TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 230,235 times.
Printings (2):
- ROTD-EN030 · Rise of the Duelist · Ultra Rare · released 2020-08-06
- BLCR-EN080 · Battles of Legend: Crystal Revenge · Secret Rare · released 2022-11-17
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.39 · TCGplayer $0.42 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-supplier-11116

## Koa'ki Meiru Token
Passcode: 176393
Card type: Token (Rock)
Archetype: Koa'ki Meiru
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Speed Duel
Card text: Special Summoned with the effect of "Koa'ki Meiru Prototype".
Summary: Koa'ki Meiru Token is a Token (Rock). It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It has no TCG printings in the database. It is available in 2 formats: Duel Links and Speed Duel. Its YGOPRODeck page has been viewed 4,719 times.
Market prices listed on YGOPRODeck (2026-10-25): eBay $1.45
Reference: https://ygoprodeck.com/card/koa-ki-meiru-token-19

## Koa'ki Meiru Tornado
Passcode: 95204084 · Konami ID: 8312
Card type: Effect Monster [Winged Beast / Effect]
Stats: WIND · Level 4 · ATK 1500 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2009-04-18 · TCG 2009-09-01
Banlist: Unlimited on all tracked lists
Formats: Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: You can return 1 "Iron Core of Koa'ki Meiru" from your hand to the top of the Deck to destroy all Special Summoned monsters your opponent controls.
Summary: Koa'ki Meiru Tornado is a Level 4 WIND Winged Beast Effect Monster with 1500 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 April 2009 and in the TCG on 1 September 2009. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 4 formats: Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 29,800 times.
Printings (1):
- ANPR-EN021 · Ancient Prophecy · Rare · released 2009-09-01
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.11 · TCGplayer $0.20 · eBay $2.00
Reference: https://ygoprodeck.com/card/koa-ki-meiru-tornado-7925

## Koa'ki Meiru Urnight
Passcode: 30936186 · Konami ID: 8636
Card type: Effect Monster [Beast-Warrior / Effect]
Stats: EARTH · Level 4 · ATK 2000 / DEF 1500
Archetype: Koa'ki Meiru
First released: OCG 2009-11-14 · TCG 2010-02-12
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Ultra Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Beast-Warrior-Type monster in your hand. Once per turn, you can reveal 1 "Iron Core of Koa'ki Meiru" in your hand to Special Summon 1 Level 4 or lower "Koa'ki Meiru" monster from your Deck, except "Koa'ki Meiru Urnight".
Summary: Koa'ki Meiru Urnight is a Level 4 EARTH Beast-Warrior Effect Monster with 2000 ATK and 1500 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 November 2009 and in the TCG on 12 February 2010. It has 2 TCG printings across 1 product, in 2 rarities: Ultimate Rare and Ultra Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 48,575 times.
Printings (2):
- ABPF-EN025 · Absolute Powerforce · Ultimate Rare · released 2010-02-12
- ABPF-EN025 · Absolute Powerforce · Ultra Rare · released 2010-02-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €7.23 · TCGplayer $4.90 · eBay $3.75
Reference: https://ygoprodeck.com/card/koa-ki-meiru-urnight-2627

## Koa'ki Meiru Valafar
Passcode: 72258771 · Konami ID: 8173
Card type: Effect Monster [Fiend / Effect]
Stats: FIRE · Level 8 · ATK 3000 / DEF 2100
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard. You can Tribute Summon this monster by Tributing 1 "Koa'ki Meiru" monster. This card cannot be destroyed by the effects of Trap Cards. During battle between this attacking card and a Defense Position monster whose DEF is lower than the ATK of this card, inflict the difference as Battle Damage to your opponent.
Summary: Koa'ki Meiru Valafar is a Level 8 FIRE Fiend Effect Monster with 3000 ATK and 2100 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Super Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 27,271 times.
Printings (1):
- RGBT-EN021 · Raging Battle · Super Rare · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €1.49 · TCGplayer $0.92 · eBay $1.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-valafar-6060

## Koa'ki Meiru Wall
Passcode: 66816282 · Konami ID: 9284
Card type: Effect Monster [Rock / Effect]
Stats: EARTH · Level 4 · ATK 1900 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2011-09-17 · TCG 2010-11-06
Banlist: Unlimited on all tracked lists
Formats: Duel Links, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the GY or reveal 1 Rock monster in your hand. When your opponent activates a Spell Card (Quick Effect): You can Tribute this card; negate the activation, and if you do, destroy that card.
Summary: Koa'ki Meiru Wall is a Level 4 EARTH Rock Effect Monster with 1900 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 17 September 2011 and in the TCG on 6 November 2010. It has 4 TCG printings across 3 products, in 3 rarities: Rare, Shatterfoil Rare and Super Rare. The earliest is STBL-EN087 in Starstrike Blast (11 November 2010); the most recent is SESL-EN050 in Secret Slayers (3 April 2020). It is available in 4 formats: Duel Links, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 74,159 times.
Printings (4):
- STBL-EN087 · Starstrike Blast · Rare · released 2010-11-11
- BP03-EN081 · Battle Pack 3: Monster League · Rare · released 2014-07-31
- BP03-EN081 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
- SESL-EN050 · Secret Slayers · Super Rare · released 2020-04-03 · listed $1.34
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.07 · TCGplayer $0.19 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-meiru-wall-5612

## Koa'ki Meiru War Arms
Passcode: 95090813 · Konami ID: 8372
Card type: Effect Monster [Warrior / Effect]
Stats: EARTH · Level 4 · ATK 1400 / DEF 1200
Archetype: Koa'ki Meiru
First released: OCG 2010-09-18 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: During each of your End Phases, destroy this card unless you send 1 "Iron Core of Koa'ki Meiru" from your hand to the Graveyard or reveal 1 Warrior-Type monster in your hand. Once per turn: You can target 1 Level 3 or lower Warrior-Type monster in your Graveyard; equip that target to this card. This card gains ATK equal to half the combined ATK of the monsters equipped to it by this effect. If this card would be destroyed by battle, destroy all monsters equipped to it by this effect instead.
Summary: Koa'ki Meiru War Arms is a Level 4 EARTH Warrior Effect Monster with 1400 ATK and 1200 DEF. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 September 2010 and in the TCG on 2 May 2009. It has 3 TCG printings across 2 products, in 3 rarities: Super Rare, Common and Shatterfoil Rare. The earliest is RGBT-EN081 in Raging Battle (12 May 2009); the most recent is BP03-EN061 in Battle Pack 3: Monster League (31 July 2014). It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 26,245 times.
Printings (3):
- RGBT-EN081 · Raging Battle · Super Rare · released 2009-05-12
- BP03-EN061 · Battle Pack 3: Monster League · Common · released 2014-07-31
- BP03-EN061 · Battle Pack 3: Monster League · Shatterfoil Rare · released 2014-07-31
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.30 · TCGplayer $0.14 · eBay $1.45
Reference: https://ygoprodeck.com/card/koa-ki-meiru-war-arms-7915

## Koa'ki Ring
Passcode: 46089249 · Konami ID: 9133
Card type: Normal Spell
Archetype: Koa'ki Meiru
First released: OCG 2010-07-17 · TCG 2010-11-06
Banlist: Unlimited on all tracked lists
Formats: Common Charity, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Reveal 1 "Iron Core of Koa'ki Meiru" in your hand to select 1 face-up monster on the field. Destroy that monster, and both players take 1000 damage.
Summary: Koa'ki Ring is a Normal Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 17 July 2010 and in the TCG on 6 November 2010. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 4 formats: Common Charity, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 15,554 times.
Printings (1):
- STBL-EN056 · Starstrike Blast · Common · released 2010-11-11
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.09 · TCGplayer $0.10 · eBay $0.99
Reference: https://ygoprodeck.com/card/koa-ki-ring-3929

## Nega-Ton Corepanel
Passcode: 55117418 · Konami ID: 8509
Card type: Counter Trap
Archetype: Koa'ki Meiru
First released: OCG 2009-07-18 · TCG 2009-11-17
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Edison, TCG, OCG, Master Duel
Master Duel rarity: Super Rare
Card text: Activate only if you control a face-up "Koa'ki Meiru" monster and have "Iron Core of Koa'ki Meiru" in your Graveyard. Negate the activation of an Effect Monster's effect, and destroy it.
Summary: Nega-Ton Corepanel is a Counter Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 18 July 2009 and in the TCG on 17 November 2009. It has 1 TCG printing across 1 product, in 1 rarity: Rare. It is available in 5 formats: Duel Links, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 17,880 times.
Printings (1):
- SOVR-EN074 · Stardust Overdrive · Rare · released 2009-11-17
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.07 · TCGplayer $0.21 · eBay $0.99
Reference: https://ygoprodeck.com/card/nega-ton-corepanel-4695

## Reckoned Power
Passcode: 11596936 · Konami ID: 8225
Card type: Normal Trap
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Reveal 1 "Iron Core of Koa'ki Meiru" in your hand. Destroy all face-down Spell and Trap Cards your opponent controls.
Summary: Reckoned Power is a Normal Trap Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 23,178 times.
Printings (1):
- RGBT-EN073 · Raging Battle · Common · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.15 · TCGplayer $0.18 · eBay $0.99
Reference: https://ygoprodeck.com/card/reckoned-power-1003

## Urgent Synthesis
Passcode: 99002135 · Konami ID: 8209
Card type: Normal Spell
Archetype: Koa'ki Meiru
First released: OCG 2009-02-14 · TCG 2009-05-02
Banlist: Unlimited on all tracked lists
Formats: Duel Links, Common Charity, Edison, TCG, OCG, Master Duel
Master Duel rarity: Common
Card text: Return 1 "Iron Core of Koa'ki Meiru" from your Graveyard to the Deck. Special Summon 1 Level 4 or lower "Koa'ki Meiru" monster from your hand or your Graveyard.
Summary: Urgent Synthesis is a Normal Spell Card. It belongs to the "Koa'ki Meiru" archetype, which has 45 cards in the database. It was first released in the Japanese OCG on 14 February 2009 and in the TCG on 2 May 2009. It has 1 TCG printing across 1 product, in 1 rarity: Common. It is available in 6 formats: Duel Links, Common Charity, Edison, TCG, OCG and Master Duel. Its YGOPRODeck page has been viewed 30,299 times.
Printings (1):
- RGBT-EN057 · Raging Battle · Common · released 2009-05-12
Market prices listed on YGOPRODeck (2026-10-25): Cardmarket €0.08 · TCGplayer $0.10 · eBay $0.99
Reference: https://ygoprodeck.com/card/urgent-synthesis-8223