Rin Okumara

+3: You lose 1 life and discard a card. Destroy target tapped creature.
-X: X is the number of cards in your graveyard. Rin Okumara deals X damage plus 2 to target player or creature.
-10: Unleash Rin Okumara. You can only activate this abilty once. Rin Okumara deals two times as much damage and can kill twice as many creatures.