So ye see, we need to find a suitable Dwarf corpse and do a bit o' ritual to em' to get my spirit grounded so I can be sent on me way! All perfectly normal stuff, o' course! We'll also need a bit o' Necrotic Runestone from a necromancer type, of course. There's one in Stratholme that goes by Maleki the Pallid. Can't expect he'll be too willin' to part with it willingly but there's a solve for that! Get me that stone and then head to the undercroft. There's a corpse there that'll do!