Gwyn, Lord of Cinder

+1: Sacrifice a creature, Gwyn, Lord of Cinder deals 3 damage to each opponent.
-3: Return target creature from your graveyard to the battlefield. Gwyn, Lord of Cinder deals damage to you equal to the mana value of the creature.
-10: Restart the game with Gwyn, Lord of Cinder in exile. You may cast him for as long as he remains exiled.