Cool cool. Much appreciated. It should definitely include an "Add to" field, as there is some debate between people whether it should be 10+Abil+Prof or 11+Abil+Prof (11 produces the same percentage changes of "effect"/"avoid" that the current saves do). Actually, those numbers might be off ... Currently, DCs are 8 + Prof + Ability; a standard starting DC would be 13 (2 proficiency, 3 ability). Saves are Prof + Ability, so a typical "high" save bonus could be +4. This means the target has a 60% chance of success on their save (roll of 9-20), and a 40% chance of failure (8 and below). If all effects use an attack roll, then the attack roll for this would be +5 instead of DC 13. For the target to have a 60% chance of avoiding, or a 60% chance of missing for the attacker, the target would need a Defense score of 17 (40% hit, 60% miss; 8 hits, or 13-20, miss on 12 or lower). As this is a +2 ability modifier, and a +2 proficiency bonus, the defense base would need to be 13. I don't really like that. I mean, it's clearly the result of the save DC having an inborn -2 penalty currently; this is a base Defense of 11, with +2 for that inherent saving throw advantage. It's just ugly. AC defaults to 10 (plus armor ...). Thoughts?