Glantrian Immortals

Glantrians put the study and practice of magic above all else.  In fact, established religions, religious orders and divine magic are outlawed in Glantri.  Thus, Glantrians do not have a religious pantheon.  More likely, a Glantri magic-user inclined to pursue powerful forces will ally, so they think, with an Archfiend or Archfey or practice summoning to increase their power.  However, the Immortal Rad is seen as a patron of magic and is cited as the patron of the Great School of Magic and those pursuing magical knowledge.

Rad

Rathanos

Glantrian Immortals

Fury of the Immortals DNDENCDM