Ashiok, Nightmare Weaver

Ashiok, Nightmare Weaver

+2: Exile the top three cards of target opponent's library. −X: Put a creature card with converted mana cost X exiled with Ashiok, Nightmare Weaver onto the battlefield under your control. That creature is a Nightmare in addition to its other types. −10: Exile all cards from all opponents' hands and graveyards.