Nicol Bolas, Spark Master

+1: Remove a counter from any target, then put a -1/-1 counter on target creature, then Nicol Bolas, Spark Master deals 1 damage to any target.
-2: All players reveal their hand, then target player discards their hand.
-12: Target player exiles their hand and sacrifices a permanent of each type, then for each type they couldn't sacrifice, they lose 5 life.