Wendell, Worlds Reason

+1: All creatures you control become artifacts with +1/+1 until end of turn. Gain life equal to the number of artifacts on the battlefield.
-2: All creatures lose hexproof and exile target creature. Bring it back onto the battlefield under your control with three +1/+1 counters on it
-12: Gain control of all cards on the battlefield. Untap them, they gain haste and become artifacts. They are creatures until end of turn.