Chronicles of Nirn
Hermaeus Mora is the Daedric prince whose sphere is the scrying of the tides of Fate, of the past and future as read in the stars and heavens, and in whose dominion are the treasures of knowledge and memory. His name is also spelled Hoermius Mora, Hormaius Mora, or Herma-Mora. Also called the Demon of Knowledge, he is vaguely related to the cult origins of the Morag Tong if only by association with his sibling, Mephala. Unlike most Princes, Hermaeus Mora does not take on a humanoid form at all, living instead as a grotesque green mass of tentacles and claws or a purple and black vortex known as the Wretched Abyss. His servants include Seekers and Lurkers.
Apocrypha is Hermaeus Mora’s plane of Oblivion, an endless library where all forbidden knowledge can be found. The books all have black covers with no titles, and the library is haunted by ghosts forever searching for knowledge. For more information, see the article on Hermaeus Mora.