Karth-A-Zax: Mastermind

+2: Exile the top card of target players library. You may look at all cards exiled by Karth-A-Zax: Mastermind
-3: Exile the top five cards of target players Library. You may look at all cards exiled by Karth-A-Zax: Mastermind
-12: You may play all cards exiled by Karth-A-Zax this turn without paying mana costs of exiled cards.