Schemes of the Lich King
Staff of the Void
The Staff of the Void is one of the artifacts needed to take the Path to Darkveil. Supposedly, this item was to be found in Drakkenhall but was actually recovered by the Half-Shadows adventuring company at the Northern Colossus yet was later taken from them by Wisp, a necromancer in the service to the Lich King.
Whereas the Staff is not currently in the hands of the adventurers, it seems likely to be recovered.