Vandreth
Vandreth, the Black Seer, is a Black Legion Sorcerer who took part in the War of Beasts on Vigilus and witnessed the duel between Abaddon the Despoiler and the Ultramarines Chapter Master Calgar.[1]
Source
- 1: Vigilus Ablaze, pg. 145 - Echoes of War: Demise of a Legend