The Oghma Infinium (Plural: Oghmas Infinium) is a powerful Daedric artifact belonging to the Daedric Prince Hermaeus Mora. It is an ancient tome of knowledge written by Xarxes, the wizard sage and scribe also known as "The Ageless One." The Oghma Infinium is given to Hermaeus Mora's champion upon completion of a specific task or quest. Once read, it disappears, returning to Hermaeus Mora's realm in Oblivion, Apocrypha.