The Nightsisters of the Star Wars Legends continuity may not be as powerful as the Sith, but they have at least one dark side power that even the Dark Lords can't access. In the now-bygone Legends continuity, the Witches of Dathomir consisted of powerful Force-sensitive human women (as opposed to the canon-exclusive Dathomirian species) with their own unique Force-using traditions. One such group, known as the Nightsisters, used the dark side of the Force in inventive and potent ways against their enemies.
