Avatar Kuruk

Lifelink

{u}: You can only activate this ability during an opponent's combat phase. Sacrifice a creature you control. If you do, prevent all damage that would be dealt to you by a target attacking creature that opponent controls. During your next turn, Kuruk gets +X/+X until end of turn, where
X is the attacking creature's power. Kuruk also gains trample until end of turn during your next turn.

"You must actively shape your own destiny, and the
destiny of the world."