Inspired by the great Dornian Heresy of Aurelius Rex, here is an alternate timeline to the Warhammer 40000 universe, where Guilliman turned traitor instead of Horus, and led half the Legions in rebellion against the Emperor. The Index Astartes are done for all Legions. Now, the Times of Ending have begun ...

For ten thousand years, Chaos warbands have plagued the Imperium. Bringing woe and despair to the innocent, the Chaos Space Marines are the vilest foes known in the history of man. Yet not all warbands are the same in this...