The Apotheosis mod endurance potion charm gives infinite stamina. It resets every time the extra stamina runs out.

Sorry if I shouldn't report this here, but it's basically an extension of this issue with Apotheosis.

Apoth has a gem called "flawed gem of the royal family", it gives you a 5% increase to absolutely all stats, and this completely breaks Feathers.
From what I could verify, when equipping a piece of equipment with this jewel, the value is multiplied infinitely little by little by 5%, until reaching the maximum, from a value of 20 to a maximum of 1024.
Curiously, it is the only statistic that does this, multiplying constantly.