1st Black Crusade

Abaddon the Despoiler made many blood pacts with the Dark Gods in the wake of Horus' defeat. On the world of Uralan, Abaddon recovered the Daemonsword Drach'nyen after battling his way through a haunted labyrinth to the great inner chamber where the blade had languished in stasis for millennia. The howling sword contained the bound essence of a dangerous Warp entity who had the power to rend reality apart wherever the weapon strikes. After the recovery of the malefic sword, Abaddon's power swells to inhuman proportions. Now recognised as the new Warmaster of Chaos Undivided, Abaddon makes his first attempt to launch a new offensive against the Imperium of Man folowing the Horus Heresy and initiates the First Battle of Cadia.