Umu, the Vengeful

Flying, Haunt
Eminence - Whenever a haunted creature dies, draw two cards, then return up to two target cards you own in exile haunting a creature to the battlefield under your control
or to your hand.
While Umu is in exile, you control the creature Umu haunts and it has Haunt.
You may return Umu to the command zone from exile only during your turn.