That was my intention exactly (rings of regeneration), for both the circle masters and the enchantresses. I could switch out the Circle Masters for Wight Mages, also
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I'm also concerned about the *units* in chillsick swamp getting diseased, and might change that one.
The site placement can absolutely be manually over-ridden; from a schtick standpoint, the Academy Underneath is *in* the Sea Underneath.
If there's a consensus one way or the other I can easily tone these provinces down or whatever people want, I just picked what seemed to me to be a treasure-province level that people would actually fight over.