This promotion requires you to have fenced three hundred gold worth of stolen goods. Talk to S’krivvva and she will tell that Hieronymus Lex has invaded the Waterfront District looking for the Gray Fox. You must find Methredhel and help her coordinate the Guild’s response. Bribe a beggar in the Imperial City and they will tell you that she is hiding in Dynari Amnis’s house in the Talos Plaza District. Talk to her and she will tell you that you and several operatives will steal several high-profile objects and force Lex to reassign his watchmen.
You are to steal Hrormir’s Staff from the Archmage’s room in the Arcane University. Wait outside the Arcane University until 1:00 AM. Use the portal in the lobby to go to the second level, and the portal there to access the Archmage’s Quarters. The staff is at the foot of his bed, steal it, and place the note in the nightstand to the left of the bed. Exit the University the same way you entered and return to Methredhel. She will ask you to go to the Waterfront and eavesdrop on Lex. You will see a Dremora deliver a note to Lex, ordering him to return his men to their posts. Find the note after he throws it on the ground and return to Methredhel.
She will ask you to return the staff, but you can’t take it back to the University. Instead, you will return it to the chest in the home of Ontus Vanin in the Talso Plaza District. Break into his house and sneak up to the second floor. You will find the chest in the corner of the room to the right of the door. Place the Ice Staff in the chest and return to S’krivva for your reward. The achievement will unlock when the conversation with S’krivva is over.