Molag Bal, The Wrathful

Flying
Whenever Molag Bal, The Wrathful enters or attacks, creatures opponent controls get -2/-2 until end of turn.
Whenever a creature on opponent control dies, put X +1/+1 counters on Molag Bal
where X is that creatures mana value.

"What is this foolishness? Has your tiny mortal mind snapped? Do you really think you can defeat me?"
— Molag Bal