Kodius mentioned this in the barb folders:
> Spell disabler/debuff duration should depend mostly on the amount of mana used. If not, something is likely wrong. You shouldn't get 20 seconds at 50 mana, and 20 seconds at 100 mana.
I guess something's wrong. I tested Misd in louts. Snap casting at 15 mana gives 42 seconds. Full prep at 100 mana gives 42 seconds.