Vassal Corruption Immunity From Master
When you have a vassal that uses a different corruption (e.g, you’re Beastmen, vassal is Greenskins), the vassal will be protected from the corruption and public order debuffs. But only for as long as they are your vassal, and their armies will only be immune to the attrition when in your, or their, lands.
It also works both ways. E.g, If you’re Vampire Counts, and vassalize Greenskins, you’ll also get immunity to living attrition. As long as you’re in your vassal’s territory.
