An inscription on the back of the favor reads,
"To my favorite pupil,
If you continue to show promise, I will teach you wonders beyond your imaginings.
If you do not, I will have you destroyed!
No doubt the warden at Stars' Rest will want to see this.
I sense something foul is near.
It is upon your person! What is it, <name?>
So, the leader of the cultists has revealed himself. We have a name.
Vanity and pride will be his downfall!
Dropped from Anub'ar Cultists (which the character is sent to retrieve items from during the quest ).