Religious event
After betraying the elves and attempting to kill Corellon, Araushnee is banished from the elven pantheon and cast into the Abyss. Her son Vhaeraun (who was also banished) and daughter Eilistraee (who chose exile) start flee to Toril. Araushnee makes a new home for herself named the Demonweb Pits and becomes the demon-goddess Lolth.