Brother vance is one of the few disciples left of osiris.. They fled mercury after a revival due to the black gardens heart being destroyed, Dormant machines awoke inside mercury and invaded the light house once Osiris the Exile was detected as a life form... His corpse and one of his followers corpses are inside that room... That follower is disputed as his lover but the tale was ended considering she would not leave him.... His disciples fled mercury but Osiris never could considering he was exiled to mercury... This area.. Is beauty itself due to the lore.. I am ashamed i was a voidwalker during his trials.. But the ram calls to me.. I wish.. And only wish Osiris was still alive if we never destroyed the black gardens heart... This is just some grimoire lore for people who never read :) Thanks if you read it completely