Re: Concentration
It seems to hold the rules for Concentration pretty well. If you're attacked or take spell damage, you have a concentration check you have to make which is just the d20 over the caster's head. If you have high wisdom, you can expect to hold your concentration, if not, you'll always lose it. I like the system quite a lot, but I'm in a two-cleric party so most of the spells they cast tend to endure.