[Kadelake]

Does anyone know exactly what The Ark effect does?

I used it for the first time and it seemed like it affected some of the units on the battlefield each time but that friendly sacreds was immune. The enemies sacreds seemed to be affected but I'm not sure. It also seemed like there might be a MR-check.

Affected units got diseased or blinded. Possibly getting other afflictions as well? Is there any damage or fatigue as well?

The Ark also claim to spread dominion. Is it an ordinary temple check?