The new change doesn't really do anything at all. Instead of having only 100% chance for a spell to work, its now 130%. So what? The effect is what needs to be 130%, not the chance of a spell's success. That is irrelevant. I guess if a creature has 100% resistance to your spell, it still might get hurt, but you should just use another school.
There is a reason for effects to go above 100%: Saving throws for effects are boosted based on the target's Bodybuilding or Willpower. You see things like "Target rolled 91. Target needed 90 (100 - 10 from Willpower).
Right now in Cyseal, enemies may only have 1 Willpower/Bodybuilding, but later on, expect that to rise a lot more.
