Loki, Masterful Deceiver

Energize 2 —When Loki, Masterful Deceiver
enters the battlefield, you get {e}{e}.
Pay {e}: Exchange control of Loki, Masterful
Deceiver and target creature an opponent
controls until end of turn. (They return to their
owner's control at the beginning of the next end step.)
Pay {e}{e}: Until end of turn, Loki, Masterful
Deceiver gains hexproof. It can't be
blocked this turn.