That's the problem I was having as well. None of my Control spells have gone through yet, which severely limits the ability of my guy to do anything because Spontaneous castings are 1. so random in effect and 2. considerably lower in power than spells you can cast unless you're willing to accept a lot of shifts.
And yeah, trading works when you have compatible skills (because I'm pretty sure most of us have been designing spells to fit our skills, or skills to fit our spells, I suppose), but none of those Harm Body spells getting tossed around do my mind-control character any good
