Grisvar the Unlucky

 is a prisoner in Cidhna Mine in Markarth (City). After speaking to Uraccen, Grisvar offers the player a shiv in return for a bottle of Skooma, which can be pickpocketed from several other characters in the mine. The shiv can be used to bribe Borkul the Beast into opening the door to Madanach's cell.

After speaking to Madanach, the player is instructed to kill Grisvar to prove their trustworthiness.