Ghoul with a motive, nicely done. Now, with such an overriding desire, how long will his humanity last before he starts to succumb to the darker impulses, when naked want begins to overpower the near incapacitating fear he has?
I think this is a very well-thought out item. It has uses beyond the typical cursed, or "magical" item as well. I can imagine a plethora of uses in my own games which could use this as a very interesting roleplay hook. Good job, Shadow!