Dremora Merchant

 is a character in.

Black Book: Untold Legends
He can be obtained as a reward for the Black Book quest Untold Legends.

He can be summoned using the Black Market power. When activated, he appears and offers to trade much like a regular merchant. He will buy any type of item and sells Daedric armor and weapons. He typically has 2000 available for trading, which resets after three days.