Sadal's Final Defeat
I've accomplished great deeds with Tanval Indoril, Holgunn and Walks-in-Ash. We've returned Tanval's Vanguard to the Ebonheart Pact, and convinced the spirits of the Tormented Spire to open Sadal's prison.
Await Guardian Justice The guardians approach. I must wait until they imprision Sadal's soul forever in Oblivion.
Leave Sadal's Prison Sadal is defeated. He's imprisoned forever. It's time to return to Tamriel.
— game journal