The Surtur always devoured powers, and used the power he stole for his own doing, so when he took the power of Cannon, he knew that'd never be enough so he stole many duplicates of Cannon and got where he needed to be, but it wasn't the right way. His now dead and back.

The Surtur is a Dark Curser with insane skills, he can cleanse positive effects, restore stamina, remove it, and apply tortures such as: Curse and Stamina Leak. The Surtur has an evolving trait: at rank 0, he has Hardened, at rank 1, he adds Tough it stacks, and at rank 3, he'll cast Evasion to himself at the start of the battle.