Oghma, also known as The Lord of Knowledge, Binder of what is known, is the Neutral Greater power of Bards, Inspiration, Invention, and Knowledge, of the Celtic pantheon and also within fictional world of the Forgotten Realms Dungeons & Dragons campaign setting. Within the Forgotten Realms he is an interloper deity, who like Silvanus, is active in more than one plane of existence. Oghma's allies are the Deities of Knowledge and Invention. His most common foes are Mask, Cyric and Bane. His old archnemesis, Leira, is now dead and an aspect of Cyric.