Grawn Vanquisher

Bloodthirst 2 (If an opponent was dealt damage this turn, this creature enters the battlefield with two +1/+1 counters on it.)
When Grawn Vanquisher is attached with another permanent, Grawn Vanquisher gains protection from black.
Whenever Grawn Vanquisher attacks alone, Grawn Vanquisher gets +1/+1 for each creature in your graveyard until end of turn.