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SE Secret Rare Koa'ki Meiru Bergzak X EARTH Level 4 [ WarriorEffect ] ATK 2000 DEF 200 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

But now let's check out a powerful ability Like Jafar, Giant Cobra can only be played in decks that are both Amethyst and Steel

There is a XYZ Rescue Rabbit deck, a synchro Scrap deck and a no-extra-pile Anti-meta Core Chimail deck

Only six PSA 10 Black Lotus cards exist

However, if you do, and that permanent is an illegal target at the time the ability tries to resolve, the ability won't resolve and none of its effects will happen

This is why Gird for Battle and Coordinated Assault are so good in the deck