An’Gromeneu

The burning one, the flaming one, the death star. Evil god that was trapped in a comet. It is prophesied that he will return and destroy the world.

It is later revealed by Taako that An’Gromeneu is not actually trapped in the comet, only his powers are. It was also mentioned that he walks the earth as Banegrim.

It's said that a person named Deev is building an army, and amassing lots of magical artifacts to drain their power and pull the comet to Urf.