Aatrox, the World Ender

Lifelink

Aatrox, the World Ender's power and toughness are equal to those of the creature to which it was equipped.

Whenever a creature an opponent controls dies, Aatrox, the World Ender gains flying until end of turn.

{1}{w}{b}: For each creature an opponent controls that died this turn, put a +1/+1 counter on Aatrox, the World Ender. Activate this ability only as a sorcery once per turn.