Uori, God of Dying Embers

Indestructible.
As long as your devotion to black and red is
less than fifteen, Uori isn't a creature.
Unspent black and red mana in your mana
pool is added to your devotion.
Whenever one or mores creatures you control attacks, up to one creature gets -X/-X where X is
your devotion to black and red. Then deal 3
damage to that creature's controller.