Greater Power, Igh-Seth is thought to have had prehistorical interest in Ærth, but whose influence has now been severely restricted with the destruction of the Yig-Ti in the First Age. Often depicted as a great serpent, sometimes with wings, Igh-Seth has no known cults in the Fourth Age.
Greater Power, Tiamat is thought to have participated in the primordial struggle for Ærth, though to what extent is unknown. The Mother of Dragons is known to have spawned Ærth's Dragonkind in the Second Age and to have been present during, and perhaps even precipitous of, The Intervention in that Age. As far as it is known, Tiamat has since turned only a seldom uncaring eye to the events on Ærth.