Sacred Pheonix

Flying
When Sacred Pheonix attacks, if defending player controls a creature with a rebirth counter on it, that creature has to block Sacred Pheonix if able.
When a creature with a rebirth counter on it dies, choose a creature at random in your graveyard. return that creature to the battlefield under your control.
Pay 4 life; Return Sacred Pheonix from your graveyard to your hand.
Most would pay a greater price for something that powerful.