Darth Traya Why. Because she was perhaps, the most cunning, manipulative, and potentially dangerous Sith of all. 1) She was not only a Jedi Master but became a Sith Lord 2) She trained thee of the most powerful Sith Lords of all time A) Revan B) Sion C) Nihilus 3) She wielded to great effectiveness, four lightsabers at one time 4) She figured out a way to destroy the Force (Though she never was able to do so)