Quarter Century Bonanza

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.

Koa'ki Meiru Drago

Battles of Legend: Crystal Revenge

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.

Koa'ki Meiru Supplier

Secret Slayers

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.

Koa'ki Meiru Guardian

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).

Koa'ki Meiru Overload

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.

Koa'ki Meiru Sandman

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.

Koa'ki Meiru Wall

Battle Pack 3: Monster League

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.

Koa'ki Meiru Beetle

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.

Koa'ki Meiru Doom

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.

Koa'ki Meiru War Arms

Primal Origin: Deluxe Edition

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.

Diamond Core of Koa'ki Meiru

Starstrike Blast

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.

Koa'ki Ring

The Shining Darkness

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.

Core Overclock

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.

Koa'ki Meiru Bergzak

Tribute 1 "Koa'ki Meiru" monster to add 1 "Iron Core of Koa'ki Meiru" from your Deck or Graveyard to your hand.

Koa'ki Meiru Initialize!

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).

Koa'ki Meiru Prototype

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.

Koa'ki Meiru Shield

Absolute Powerforce: Special Edition

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.

Core Blast

Once per turn, you can discard 1 card to add 1 "Iron Core of Koa'ki Meiru" from your Deck to your hand.

Core Transport Unit

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.

Iron Core Specimen Lab

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".

Koa'ki Meiru Urnight

Turbo Pack: Booster Two

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.

Iron Core of Koa'ki Meiru

Stardust Overdrive: Special Edition

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.

Iron Core Armor

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.

Koa'ki Meiru Maximus

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.

Koa'ki Meiru Rooklord

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.

Koa'ki Meiru Sea Panther

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.

Nega-Ton Corepanel

Ancient Prophecy: Special Edition

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.

Core Blaster

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.

Core Compression

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.

Core Reinforcement

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.

Iron Core Luster

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.

Koa'ki Meiru Boulder

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.

Koa'ki Meiru Crusader

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.

Koa'ki Meiru Ghoulungulate

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.

Koa'ki Meiru Gravirose

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.

Koa'ki Meiru Hydro Barrier

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.

Koa'ki Meiru Speeder

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.

Koa'ki Meiru Tornado

Raging Battle: Special Edition

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).

Automatic Laser

Select and send 1 "Iron Core of Koa'ki Meiru" from your Deck to your Graveyard.

Iron Core Immediate Disposal

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.

Koa'ki Meiru Ice

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.

Koa'ki Meiru Powerhand

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.

Koa'ki Meiru Valafar

Reveal 1 "Iron Core of Koa'ki Meiru" in your hand. Destroy all face-down Spell and Trap Cards your opponent controls.

Reckoned Power

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.