|Circadian Beat||Map deployment||-|
|Effects||Grants the user increased Strength and Magic when the user is deployed on maps without sunlight and increased Defense and Resistance when the user is deployed in sunny outdoor maps.|
|Notes||Personal skill of Constance|
Circadian rhythms are physical, mental, and behavioral changes that follow a daily cycle. They respond primarily to light and darkness in an organism's environment.
- Circadian Beat appears to be a fusion of the skills Elbow Room and Natural Cover from Fire Emblem Fates, in that offensive and defensive stats are boosted depending on a unit's surroundings, though the trigger here is sunlight rather than terrain.
- Despite what the cutscene in Chapter 3 of Cindered Shadows may imply, hiding in treelines from the sun does not trigger Circadian Beat in sunny maps.