Welcome to My Nightmare
Criminal Organization based in Waterdeep. The Xanathar have 11 different aspects of organized crime that they participate in. Extortion, assassination, slavery, information dealing, blackmail, book keeping, smuggling, mercenaries, thievery, enforcement, and magical defenses.
The cut-throat guild members of Xanathar have extensive training and rival organizations try to avoid agitating the dangerous group.