Demon Lord's assassination

A demon horde was traveling through The Forgotten Lands. It became evident by the severe injuries in all of their members that they had just participated in a great battle.

The Demon Lord leading the horde was four meters tall and looked like a minotaur, but a skinny one, to the point of seeming skeletal. Rather than bull horns, he had curved horns like those of a ram, and his feet ended in claws instead of hooves. He also had a serpentine tail that ended in a tangled clump of steel-like spines, and all of them secreted extremely deadly toxins. 

Of the entire horde, the Demon Lord was the one with the worst injuries. His left leg was missing, as did his right eye, and there were holes all over his body contaminated by poison. 

The most severe damage was in his back. There were four lacerations coated by a silver aura, and they were so deep that they had managed to cut his spine in several parts.