Ashiok, Mind Bender

+1: Exile the top two cards of target players library. Put a 2/1 blue and black Nightmare Horror creature token onto the battlefield.
-2: Look at the top 4 cards of target player's library. Exile a card, then put the rest back on top in any order.
-8: Exile all non-Horror creatures, put a 2/1 blue and black Nightmare Horror creature token for each creature exiled this way.