Koa'ki Meiru Wall

Koa'ki Meiru Wall: 0 ATK/2000 DEF/ROCK/Effect: You can discard this card from your hand during the end phase of a turn in which a "Koa'ki Meiru" monster would be destroyed. All face up "Koa'ki Meiru" monsters you control are not destroyed by their own effects. When you discard this card for its effect, you may add 1 "Iron Core of Koa'ki Meiru" from your deck to your hand, then shuffle your deck.