Nicol Bolas, Tarkir' Bane

+3: Target player discards a card, then you draw a card
-4: Gain Control of Target creature until end of turn. Untap it. It gains haste and trample. Then sacrifice that creature on your endstep.
-15: All permanents lose indestructible until end of turn, destroy all nonland permanents, then draw cards equal to the amount of creatures destroyed