ashiok, of nightmares

+1: exile 4 cards of target players library then if 3 or more of them are creatures exile the top two cards of that players library
-X: destroy target creature with converted mana cost X or less then exile X-2 cards from the top of target players library.
-8: exile the top X cards of target players library. where X is the number of creature cards in exile that that player owns.