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Yeah. Magic is clear now.
I tried other EE skills besides magic.
Working: Dampening (specified in defaultstats), Wizardry (-40%), Education (+20%), Logistics (+40%), Leadership (+4), Luck (+4).
Conditionally working: Machines (the tent can't heal for an unknown amount, so it heals for wild negative numbers; the ballista fires correctly).
Not working: Attack, Defense (they don't know how much bonus to give and revert to advanced).
Funny screenshot: