Balis'mal, Demon God

+2: All creatures target opponent controls get -2/-2, then deal 3 damage to each opponent
-5: Create two 6/6 black demon creature tokens with flying and menace, then deal 3 damage to each opponent
-15: Until end of turn, Balis'mal, Demon God becomes a 15/15 demon god creature with trample, then deal 3 damage to each opponent