More points in Intelligence reduces the AP cost of skills. It's even in the tooltips. I'm not sure what the formula is though.
Yea I read that, but it wasn't obvious at how much Int was needed to reduces it by. It would be better if it said, 2 Int reduces it by 1AP.
Unless it's 2 Int = -1AP?
Yes, that is the case at least up to an intelligence of 14.
Do you know what it is after 14 Int? 3? I'm guessing it'll get to 4 later too.