Sharek Ar Tarma

Sharek Ar Tarma was an obscure but extremely dangerous Sith technique used to gain dominance over the minds of sentients. In simplest terms, a practitioner of the technique essentially bombarded a given victim with dozens of visual and audial stimuli at a rapid pace, until the victim attempted to stop thinking. As soon as this occurred, the practitioner would embed a small part of their own consciousness into the victim's mind. Through this technique, the practitioner would be able to remotely track their victim's movements, and apply further painful stimuli to force the victim to perform their will.

The most obvious applications for the technique lay in creating slaves or sleeper agents, and the most skilled practitioners were able to impant themselves into their victims' minds without their victims ever knowing it. The Sith Lord Darth Rakena, for example, managed to very subtly infect nearly a dozen padawans with her consciousness while disguised as the seemingly benevolent Jedi Master Ashek Sum, and none of the other Jedi ever suspected a thing until all of the padawans had turned to the dark side.

The technique was not without risk to the practitioner, however; excessive use of Sharek Ar Tarma often led to severe mental health issues.