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 [BP03-EN058] Rare](http://www.cardmerchanttakapuna.co.nz/cdn/shop/products/2376fdca-590f-5b37-96f7-2b3d003b8aa1.png?v=1698537948&width=1445)