Gems, fatigue and increasing magic levels

[Micah]

I just tested this, it seems like casting fatigue stops at 200, at least for non-communion slaves...I had an E3 mage cast Iron warriors for 40 fatigue, summon earth power for another few (and the needed path boost), and then earthquake with 3 gems, which is a 300 fatigue spell, so all 3 were used to get the casting off...he took a bit of damage, which I assume was from the earthquake spell, but didn't explode in blood from the 150 points of fatigue damage he would have taken if there was no cap.