Horizon - The Cure

Horizons Plague
Historical information
Created by:	Lysu Thren
Date engineered:	Circa 20,000 BBY
Biological information
Susceptible species:	All sentient Force users
Transmission type:	Unknown, likely contact
Symptoms:	Initial symptoms Enhanced Force ability Flu-like symptoms Advanced symptoms Loss of Force ability Strong Force resistance Enhanced physical ability Decreased mental acuity High pain tolerance
Treatments:	Unknown
Chronological information
Era(s):	Pre-Republic Era Old Republic Era Rise of the Empire Era New Republic Era New Jedi Order Era Dark Jedi Brotherhood Era
[ Source ]

The Horizons plague was a disease created by Lysu Thren, a Je'daii follower of the Bogan. One of the few Bogan disciples to survive the Force Wars on Tython, Thren was sentenced to exile on the moon Bogan to ponder the Ashla. Escaping from Tython and eventually the system, Thren eventually settled on Drongar. There he would work to create a plague that would destroy Force users completely.

The plague itself is an extremely virulent example of Bogan magics, predating even the most ancient Sith Alchemy by thousands of years. Specifically targeting wielders of the Force, the plague initially greatly increased Force ability before stripping it from its victims and leaving them to die. Thren was never able to deploy his weapon against the Jedi, dying before he saw the chance to use it. Throughout the millennia it would remain unknown to the rest of the galaxy at large save for a chance encounter by explorers from the Sith Empire. It would eventually be discovered once again by Archibald Zoraan and used by the former Grand Master against the Dark Jedi Brotherhood.