Ruusan Prophecy
this was the term used to describe the belief among the Jedi Order that a knight would one day free all the souls trapped in the Valley of the Jedi on Ruusan, thereby restoring balance to the Force on the planet. The spirits of both Sith and Jedi were trapped in the Valley during the Battle of Ruusan, when the Sith Lord Kaan set off his thought bomb. The prophecy was ultimately fulfilled by Kyle Katarn, after he defeated the Dark Jedi Jerec and his minions before they could access the Valley and use its power for evil.