KillerGremal
From a player side perspective the order doesnt matter it would be then 85%+(0,80*15%)=97% as well. Diablo 2 influence here too, although the damage there was first subtracted and then added.
Good that you posted though. I cant seem to figure out where you post/read the most. Thank you very much for creating such a great mod as Aranna legacy, probably the best DS2 mod ever created i think.

But there seems to be a bug with timer refreshing for buff spells. Spirit embrace works cumulative with ice and lighting resistances( but not fire). It is disturbing since mages dont autocast on summons(great would-be feature) and if you cast it on them, everyone else gets a free +30ice, lightning res, until the previous spell doesnt run off. Or then someone dies same happens. Im unsure if other buffs have same problem. with spirit it was the easiest to see.
Also having multiple summons turned on by default is overkill. Summons are nearly overpowered in the game with BW, having twice the life and armor of a tank(ketril), provoke nonstop, dealing extreme damage with Aether blast, ( multiple ABs would be just crazy) and being the source of life for a mage with summon bond. Maxed out SummonBond means a mage has 73% resistance vs everything(!), and multiple summons ensure he can always recast another before the last one is killed. This seems rather targeted for someone interesting in experimenting, not a regular player.