@claystruction hi, I just made a quick save to test this using only required mods, as well as a second time with ve psycasts just in case, but didn't encounter any problems. I think it might be a mod conflict on your end.

My pawn with the Artonach sign takes damage, but doesn't lose heat.

they are hediffs applied to a % of pawns of your choice that gives them various buffs depending on when they were born, default is 100%. It also changes the names of the months (you can disable it iirc)

These look really cool! I've not used this mod before, so are these hediffs, traits or something else?