Alina Vess

Ninjutsu {1}{b} (Return an unblocked attacker you control to its owner's hand: Put this card onto the battlefield from your hand tapped and attacking.)
When Alina Vess deals combat damage to a player, that player gains control of it.
At the beginning of your upkeep, sacrifice a creature you control other than Alina Vess.
"Can't loose playing both sides."