Warhammer 40k - Warlords of the Dark Millennium - Ahriman

Once a favoured sorcerer of the Thousand Sons Legion, Ahriman was responsible for the Rubric, an powerful spell that turned almost every Space Marine in his Legion to dust, trapped forever in their animated suit of power armour. Now, Ahriman seeks knowledge above all else, and has spent his lifetime seeking out the entrance to the mysterious Black Library.