Daedra Prince: Azura
Summoning Date: 21st of First Seed
Description: Few mortals have the stomach to trade in souls. The Dark Brotherhood does it, as do certain groups within the Mages Guild. For these cruel folk, Azura's Star has a particular fascination. The Star acts as a reusable soul gem. The soul of any creature killed by the bearer of the Star is trapped within it. If the Star already carries a soul, nothing happens. Using Azura's Star empties it, freeing the trapped soul to make its journey to Oblivion. Azura's Star can be used to make magical items over and over and over.
Comments: For those with access to an Item-Maker, but who don't want to blow 5000gp a pop for a soul gem or take the chance of their Soul Trap spell failing, Azura's Star is the solution to their problems. The Star is a reusable soul gem and looks like a big, blue, multi-faceted gem. When equipped (it takes up an Amulet slot), the next creature killed is automatically placed in the gem, ready for soul-binding. Rumor (actually one of the forums on Compuserve) maintained that it was possible to soul-trap humans with Azura's Star. I have tried multiple times and not been able to do this. Using the item will harmlessly release the trapped soul and the Star is ready for another occupant.