Roland Lebrut:
Suggestion: instead of advantage on the damage roll for those who take the slow round, perhaps use the passive advantage / disadvantage bonuses, as per Passive Checks, pg. 175?
This would be +5 to spell DC, in this situation.
Agreed this is acceptable
so it did hit in this case... give me just a moment to sort things out
The advantage of taking the slow round is it gives you advantage on to hit rolls, but not with your damge