Avowed.
It's not hard, but it's also not as easy as everyone seems to think it should be. Turns out there's a reason for that - I've been pumping the wrong statistic.
35+ years of RPG gaming taught me that intellect is the primary statistic that determines spell effectiveness, but that's not the case here. I learned today, now that I'm on the last big zone, that might, of all things, determines spell damage.
It was right there in the statistic description in the game, but it never occurred to me to read it closely for spell effectiveness. I can respec for a nominal fee, but I think I won't just to see how this plays out.