Mythic: Sepulcher of the First Ones is a dungeon & raid achievement earned by defeating the following bosses in the Sepulcher of the First Ones on Mythic difficulty.
Series[]
[Heroic: Sepulcher of the First Ones]
[Mythic: Sepulcher of the First Ones]
Patch changes[]
Patch 9.2.0 (2022-02-22): Added.