One of three gems given to the mortals of Jorrahu by Vadic.
This Onyx gem was given to the Dragonborn nation of Korrath. Whoever wields it is instantly killed and resurrected into a being similar to a litch. The gem will contain its wielders life force and in exchange give him/her an increase in strength and a long unlife. The wielder can also use the gem to “eat” the life force of their enemies.
However once the gem is removed from contact with its wielder’s flesh they go from undeath to simply dead.