I'm trying to figure out how the mechanics work for tactical combat spells. The damage is clear enough, it's usually stated as up to (INT) * n(Shards), but I want to know what roll is taken place to determine if a spell hits or misses.
I get the impression that the Defense stat plays some role in it, because I typically "miss" a lot more spells against high defense targets, but it's not clear. Also, if Defense is used to avoid magic damage, what is the to-hit stat that is used? Is it my INT? My attack rating? A flat die roll of some sort?
Any help/clarification greatly appreciated.