Yhama, Lord of War

+2: Deal 4 damage to target creature, if that creature would die this turn, deal 4 damage to its controller.
-3: Creatures you control get +3/+0 until end of turn, if those creatures are Oni, they also get double strike and haste until end of turn.
-12: Remove all Rage counters from permanents you control, deal X damage to target player where X is the number of counters removed this way.