Kirby, Star Warrior

Whenever Kirby, Star Warrior attacks, sacrifice a creature if able. Exile that creature under Kirby. Kirby gets +X/+X until the end of the turn, where
X is the power of that creature. At the beginning of your end step, return that creature to the battlefield with two suspend counters.
{w}{u}{r}: Kirby, Star Warrior becomes a copy of the creature exiled with it until the end of the turn. You may only activate this ability as long as Kirby is attacking and a creature is exiled under Kirby.