Darklord Nergal

You can only Special Summon “Darklord Nergal(s)” once per turn. If your Fairy monster attacks a Defense Position monster, inflict piercing battle damage to your opponent. (Quick Effect): You can pay 1000 LP, then target 1 “Darklord” Spell/Trap in your GY; apply that target’s effect, then shuffle that target into the Deck. You can only use this effect of “Darklord Nergal” once per turn.