Kavash, the Soul Pit

Kavash, the Soul Pit is a powerful weapon used for the capture of demonic souls within itself, leaving the demons attacked with the blade unable to return to the Twisting Nether to regenerate.

The dagger was formerly in the possession of the Broken Heart Raiders, a group of demonic cult pirates captained by Victor del Torre. Victor became possessed by Lascivious, a Shivarra whose soul was confined within the weapon but was able to reach out through the shadows and possess the pirate captain and used the Raiders to secure captives (and by extension souls) to feed to Kavash, trying to overload the blade and force it to break and release her, and the other demons contained, back into Azeroth.

With aid gathered from two of the Blades of Elune, Yashadel and Ishraena Shadewhisper, the pirates were overcome and used to recapture Lascivious, releasing her from the pirate captain's sway. The dagger was returned promptly to the care of Shrae's father, Erion Shadewhisper, to be secured properly.