Force Illusion

Force Illusion was a Force ability that allowed the user to generate illusions. This power was useful in combat, allowing a Force-sensitive individual to make copies of themselves to make it harder to find them or cause their opponent to lose focus by making them see things they feared. When Jedi Knight Cal Kestis faced the fallen Jedi Dagan Gera at the Koboh Observatory, both used this ability, with which Kestis destabilized Gera by making him see something he feared: his former friend and colleague, the Jedi Master Santari Khri, judging him and disapproving of his actions. This allowed Kestis and his ally to kill him.

Text and facts from the “Force Illusion” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.