Illumination is a Monastery technology. Monastery Units regain their faith +100% faster after a successful conversion.
- Building: Monastery
- Age: Imperial Age
- Cost: 120 gold
- Research time: 65 seconds
- Available to: 42 of 56 civilizations (14 do not have it).
Monks recover faster after a conversion, so they can convert again sooner.
Figures from the game data for Update 185872 (September 2026), at the time of publishing.