Obsidian Sanctum

Videos in this post via TankSpot.

Vesperon

- Applies aura Power of Vesperon which decreases maximum hp for everyone by 25%.
- Periodically spawns Acolyte of Vesperon within Twilight Realm. While Acolyte is alive his aura increases fire and shadow damage to the raid.

Tenebron

- Applies aura Power of Tenebron which increases shadow damage for everyone by 100%.
- Periodically hatches eggs within Twilight Realm. If eggs are not destroyed they hatch into Twilight Whelps that follow raiders out of the Twilight Realm.

Shadron

- Applies aura Power of Shadron which increases fire damage for everyone by 100%.
- Periodically summons Acolyte of Shadron inside Twilight Realm. While the Acolyte is alive, Shadron increases fire damage and takes no raid damage.

Sartharion