Gate to the Aether - [Foil] Mirrodin (MRD) Extended Art you may exchange control of

you may exchange control of target nonland permanent you control and target nonland permanent an opponent controls with an equal or lesser mana value

This is one of its dead ends

If an opponent cast three or more spells this turn

Jolrael's choice of homes was far better than her choice of allies

First strike Sacrifice Vampire Hexmage: Remove all counters from target permanent

Gate to the Aether - [Foil] Mirrodin (MRD) Extended Art you may exchange control ofAt the beginning of each player's upkeep, that player reveals the top card of their library. If it's an artifact, creature, enchantment, or land card, the player may put it onto the battlefield.