Khila, Birthed From Blood

Bloodsoak — When Khila, Birthed From Blood
enters the battlefield, you may sacrifice a
creature. If you do, put a number of +1/+1
counters on it equal to the power of the sacrificed creature, then this creature gains haste until end
of turn.
When Khila, Birthed From Blood attacks, it deals damage to target player or planeswalker equal to
its power.