The Lord of Shade

A mysterious entity who opposes Nalzmyr's patron. The Savage Seven discovered one of his warlocks dead in a holding cell in the Arcane Council's tower in Silverymoon. He was caught breaking into a library outside the market and, after torture, revealed he was seeking information on the Netherese Empire and the Phaerimm.
Was revealed to be one of the Planeswalkers, Firble Gemcutter.