Needed a hand

Balrog died while trying to decapitate the princess he had sworn to protect. Never the smartest, he stuck his arm into a black hole and lost it as a result. However, he gained the hand of the archmage granting him great powers. And then quickly undid this by drinking from a chalice of blood and diminishing his life force to that of a baby. His life was finally ended by the Demilich Azer as Balrog attempted to decapitate the Princess before she could be used to usher in the end of the world.