The Edge of Empire
Thanantilis is a character of ancient elven lore. There are many tales, epic, tragic, and ribald, of Thanantilis’s deeds.
His final story, told to elven children, is all about how Thanantilis and his friends banished the Otherworlder from Faerun.
According to the tale, Thanantilis used the Jade Eye to banish the evil ruler to another realm and imprison him there, sacrificing his very soul in the bargain.