Sartharion is a black dragon boss located in the Obsidian Sanctum of the Chamber of Aspects. He is charged to watch over the twilight eggs in the sanctum. This part of the Obsidian Sanctum contains 4 mobs of interest. These mobs are Sartharion (the raid boss himself) and 3 drakes, Vesperon, Shadron, and Tenebron. Each has their own form of adds depending on how you engage them. The drake mobs are known as "Disciple of..." respectively.