Abaddon the Despoiler launched his 5th Black Crusade out of the Eye of Terror in 723.M36, one of his infamous incursions into the realms of the Imperium of Mankind. He scoured the Elysia Sector, raiding hundreds of worlds and causing untold death and destruction. On the world of Tarinth, the Despoiler lured the Warhawks and Venerators Chapters into the ruins of Kasyr Lutein where he trapped them between the daemonic hordes of Khorne and the Chaos Space Marine forces of the Black Legion. In a bitter last stand, both Loyalist Chapters were utterly destroyed, their skulls taken by the ancient Daemon Prince Doombreed, whose existence precedes that of the Imperium itself, to be mounted upon the mighty throne of Khorne.