How do I get the Daedric Crescent sword?
To get this sword, you need to obtain the daedric amulet in the small chest in front of Divayth Fyr to his right. You can freely open the chest and take it because he does not resist you, and then you equip the amulet to transport you to fight a daedra to get the sword. You will be immediately teleported out once you defeat him and given the sword. However, if you place a mark in this place, you can return and get another sword, as well as the amulet, but do not use it! It will cause your game to freeze. To leave, an intervention spell can get you out, but not in the GOTY version. For that, you must have Barlizar’s Mazed Bane to transport you out, which is received during the Tribunal main quest.