Xanathar

Background
Not much is know about one of the Lords of Waterdeep, although he is truly thought to run Waterdeep itself, alongside his shadowy organisation. He is suspected to be a Beholder, though that is just speculation.

Interactions With Mystic Obscura
Xanathar was working with both Drada Zeltine and Garhan; of the Molten River Clan, when Mystic Obscura killed them and released their dragon wyrmlings into the world. Frustrated by this interference, Xanathar hired The Black Lodge to kill Mystic Obscura.

Over the course of the next year, Mystic Obscura escaped Xanathar's grasped, and managed to kill all but two members of The Black Lodge, with Lusk siding with them and informing them of Davon's (The Black Lodge leader) position.

Annoyed by this, and as Mystic Obscura vanished mysteriously for over 4 months, Xanathar sent Davon to Summervale Farm; where Mystic Obscura lived, and took Emmalee Forester, one of their charges, and kept her with him, while Davon tortured their wizard friend, Janak.

Xanathar stole the Sending Stone that Emmalee had been given by Mystic Obscura, and when contacted by member Ellywick Hollyheart, Xanathar informed her of what had happened, while she told him they were coming for him. The gnome ending the call, Xanathar prepared for them.

Xanathar ordered his men, one of them being Janak's imprisoned husband Elison, to meet with Mystic Obscura when they arranged a meeting with him. Xanathar himself stayed in the back, sizing up Mystic Obscura as it was revealed he didn't want them dead, and that Emmalee would be returned to them in the morning. He asked them to deal with The Zhentarim Mercenaries in Yartar, as they were bad for business.

Upon asking if he had the artifact, Xanathar himself spoke, stating he did. And that they could get it back... should they kill his rival, Dissumusk. The group agreed to think on it, with Xanathar giving them till morning.

Xanathar found Mystic Obscura asleep on the stone steps of one of his many pavilions, and after meeting up with Jarlaxle, an ally within Skullport, Jarlaxle convinced Xanathar to resurrect Aegon Loneblade, in exchange for his favor being paid. Xanathar eventually relented, and Aegon was successfully resurrected within the Pavilion.