After you reach the Cathedral and talk to Scarlet Commander Mograine, the ghost of Highlord Mograine, the Ashbringer, enters and speaks with his son. However, visiting the Scarlet Monastery with the sword equipped yields interesting results! All the NPCs in the Cathedral instance will turn and bow before the person who has the sword. Comment by 60672'Once the sword is acquired, equipping it will curse the owner, turning the Argent Dawn faction to Hated (temporarily).