Until end of turn, target creature you control gains, "When this creature leaves the battlefield, exile it then return it to the battlefield under your control at the beginning of the next end step. It enters the battlefield with an additional +1/+1 counter."

Overload {1}{W}, Sacrifice a Legendary Creature. (You may cast this spell for its overload cost. If you do, change its text by replacing all instances of "target" with "each.")