[Source] An ancient Sith artifact that served as a power source for the Dark Reaper superweapon, the Force Harvester was a large swirling globe that produced a destructive form of purple energy that drained the living force from anyone it came in contact with within a small area, producing a concentrated form of dark side energy that would be used to power the Dark Reaper. However, it could not harvest a wound in the Force. When in use, the Harvester also radiated a bright purple glow. It was originally a device created by Exar Kun to operate the Dark Reaper during the Sith Wars, however, the Jedi Knight Ulic Qel-Droma found a way to it and clues about the Reaper and the Harvester were scattered across the galaxy.