Bahamut, King of Dragons

+3: Search your library for a Dragon creature, put it onto the battlefield, then shuffle your library.
-5: Bahamut, King of Dragons deals damage to up to 3 target creatures opponents control equal to their toughness.
-12: You get a emblem with "Permanents you control have hexproof, indestructible, and Planewalkers you control are immune to combat damage."