This weapon once belonged to Stalvan Mistmantle, in which he used to kill his victims. Noted not just by name, but by the curse debuff the item gives is the same as the one Stalvan Mistmantle gives to players in Duskwood.
This article or section includes speculation, observations or opinions possibly supported by lore or by Blizzard officials. It should not be taken as representing official lore.
Its speculated that this item was going to drop from Stalvan as a rare drop, but adding a rare drop to a quest mob would interfere with questers.