The original Dark Conclave was a group of arakkoa which resided in Shadowmoon Valley in the years prior to the First War. The Dark Conclave set up two encampments, Sketh'lon Wreckage and Sketh'lon Base Camp, in the area. When Gul'dan rallied the First Horde, the arakkoa decided to strike against him. However, Gul'dan - having been taught the secrets of the arcane by the eredar lord Kil'jaeden - unleashed powerful magics against the arakkoa, destroying their encampments. Gul'dan's powerful spells made the Dark Conclave arakkoa into ghosts, left to wander throughout their ruined encampments.