Like Silvanus Oghma is based on a historical Oghma from Celtic mythology (see Oghma), supposedly having been active in more than one plane of existence.
He is leader of the Deities of Knowledge and Invention (including Milil, Deneir and Gond), and his homeplane in the 3rd Edition world is the House of Knowledge. His symbol is a Scroll and his favourite weapon is Mortal Strike (a longsword).
He grants the domains Charm, Knowledge, Luck, Travel and Trickery. His worshippers are artists, bards, cartographers, inventors, loremasters, sages, scholars, scribes and wizards. They can be of any alignment, unlike most neutral gods.
After the debacle in Zhentil Keep that saw Cyric take a blow to his power, he entrusted Rinda with the Cyrinishad, a book Cyric had her pen that converted anyone who read it or heard a reading of it to a fanatically loyal follower of Cyric. Cyric then read his own book. He also gave her a diamond amulet to render her invisible to all the gods, even Oghma.
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.
Orders
Companions of the Silver String
The Companions of the Silver String are heroic bards who acted
valiantly at risk of their own lives in the service of the church of
Oghma.