Priests of Baa'ri

The Priests of Baa'ri are a draenei order founded in the city of Baa'ri. The faction was closely connected with the priesthood of the Temple of Karabor, now known as Black Temple. Artifacts of power allowed high-ranking priests free entrance to the Temple of Karabor, one of the holiest sites in Draenor.

Gul'dan's rise to power led to the near-extinction of the draenei and the severance of the orcs from the elemental forces of Draenor. Baa'ri became the site of one of the worst atrocities committed in this dark conflict: the city was covered under a wall of lava and ash as Gul'dan and other warlocks raised the volcano which now bears his name.

While the Ashtongue Deathsworn search the ruins for the relics, the remnants of the Baa'ri priesthood have remained in hiding until the arrival of Alliance and Horde forces in Outland. With new allies to help in the struggle to reclaim the Temple of Karabor from Illidan's clutches, the priests of Baa'ri have reemerged to offer their knowledge of the Light to those who prove themselves capable of opposing the Betrayer.

Existence
It is not known if this faction was ever truly intended to be added to World of Warcraft — the information page on the official site shows that some faction rewards have holy resistance — something that is not used in World of Warcraft.

The mentioned Ruins of Baa'ri do exist in-game.