XP Value: 300
GP Value: 1,500
This magical sheath protects and acts as a storage case for a sword. It even stores up the radiation and darkness of the Underdark itself in a way that protects an item kept in the sheath of darkness for up to 1 hour for every two hours it is kept sheathed. Otherwise, this sheath can hold the same type of weapon as the sheath of holding charts indicate in The Complete Fighter’s Handbook; although nothing bad will happen should the case be placed within any dimension space of magical item.
Thus a drow fighter could carry his drow long sword +3 to the surface easily, and it would remain fully functional and usable even in the light of midday as long as it didn’t remain out of the sheath for more than 1 hour for every 2 hours they were stored in the sheath of darkness. The noble drow archmage Frizzan was renowned for his manufacture and selling of these potent items, especially to drow settlements close to slaving routes and Skullport.