Morghur

The herds say Morghur was born wrong even by the standards of Chaos: a thing shaped like a beastman the way a wound is shaped like the blade that made it. Wherever the Shadowgave walked, the world sickened: trees bled, rivers turned against their courses, and living creatures folded inward into shrieking spawn at the brush of his shadow. He commanded no warhost and needed none. He was less a chieftain than a walking unmaking, and the beastherds followed him the way carrion birds follow a storm.

Morghur has been killed more times than any legend can count, by heroes whose names were once great and are now mostly forgotten, and it has never once mattered. What wears his shape is not a creature but a recurrence: a flaw in the order of things that closes over and reopens like a wound that will not stay shut. Even the Dark Gods are said to watch him uneasily, for Morghur serves no throne and advances no great game; he is entropy with a heartbeat, and he wants nothing at all except that everything else stop being what it is.

In the Mortal Realms his cult burns brightest among the Gavespawn, the greatfray that bears his old title. They teach that the Shepherd of Chaos never truly left: that his essence passes from champion to champion like a spark down a bloodline, and that every mutation in the herd is his hand at work. Around their herdstones the malformed are exalted rather than culled, and the bray-shamans whisper of the day the Shepherd gathers in his flock at last: when the realms themselves will lose their shapes, and everything will run together into the formless dark from which the first herds came.