Greater Blazing Warrior

Whenever you cast a spell that does damage to an opponent, or when the ability of a permanent you control does damage to an opponent, put X Mastery Counters on Greater Blazing Warrior, where X is equal to the amount of damage done.
{1}{r},{t}, Remove five mastery counters from Greater Blazing Warrior and sacrifice it, put one "Incarnation of Infernoes" from your library onto the battlefield, it gains haste.
{r}{r}, Deal X damage to target opponent, where X is the amount of damage they've taken this turn