|Chamber of Aspects|
|The Obsidian Sanctum (10/25)|
|The Ruby Sanctum (10/25)|
Baltharus the Warborn
and accessed via a crack in the ice below Wyrmrest Temple. It holds one raid boss, Sartharion the Onyx Guardian, and his three drake lieutenants, Shadron, Tenebron, and Vesperon. Raiders may choose to kill all three drakes or leave some combination of them alive. Completing the encounter with one or more drakes up increases both the difficulty and the quality of loot that drops.
A 10 and 25-player version of this raid exists.
In the wake of the Nexus War, Alexstrasza tasked her children with rooting out any danger and treachery within the Wyrmrest Accord. They quickly located a clutch of twilight dragon eggs within the Obsidian Sanctum. With their resources already strained in dealing with the Scourge and the blue dragonflight, Alexstrasza's consort, Korialstrasz, has sent word of the eggs to Dalaran's Council of Six in the hopes that able-bodied adventurers can enter the sanctum and destroy the twisted progeny of Deathwing.
- Black dragon (one, Sartharion)
- Black dragonspawn
- Black drakonids
- Fire elementals
- Twilight drakes (three, Shadron, Tenebron, and Vesperon)
- Twilight dragon whelps
- Acolyte of Shadron
- Acolyte of Vesperon
- Disciple of Shadron
- Disciple of Vesperon
- Lava Blaze
- Onyx Blaze Mistress
- Onyx Brood General
- Onyx Flight Captain
- Onyx Sanctum Guardian
- Sartharion Twilight Whelp
- Twilight Whelp
|10-player mode||25-player mode||Objective|
|Defeat in The Obsidian Sanctum|
|Defeat without getting hit by Lava Strike|
|Defeat and the Twilight drakes in The Obsidian Sanctum with fewer than 9/21|
|With at least one Twilight Drake still alive, engage and defeat in The Obsidian Sanctum|
|With at least two Twilight Drakes still alive, engage and defeat in The Obsidian Sanctum|
|With all three Twilight Drakes still alive, engage and defeat <the Onyx Guardian> in The Obsidian Sanctum|
- Patch 3.0.9 (2009-02-10): Changed the color of the fissure in the Obsidian Sanctum to be more visually distinct.