Bolas, the last elder

+3: Destroy target nonland noncreature permanent, that opponent discards X cards where X is that permanent's converted mana cost.
0: Gain control of target creature until end of turn, it gains haste. Sacrifice it a the beginning of the next end step.
-12: Bolas, the last elder deals 7 damage to each opponent, each of these opponents sacrifice seven lands and seven creatures.