When you invoke the charmed bane, targets who do not make their resist roll within 24 hours of being afflicted become permanently affected by the bane. They do not receive any more resist rolls to shake themselves free of the effect. Other extraordinary effects like a nullify bane can still end the effect (and other methods may work at the GM’s discretion).
While most banes last until the target actively attempts to resist it, this bane prevents the target from being aware of their affliction and thus prevents them from actively attempting to break free. However, the target’s true mind is magically suppressed but fights to regain control. As such, at the end of each of its turns, the target receives a resist roll as a free action to break free from the effect. When your target succeeds at a resist roll against this bane, they become immune to all subsequent attempts by you to inflict the bane for the next 24 hours.
In short, if you charm someone, they get to roll to resist it every single round, and if they have the horrific luck to somehow fail every single resistance roll for every single round of an entire 24 hour period - then it becomes permanent. Like seriously, how was this supposed to work?
Biggest thing to remember is that nearly all banes have that if you fail x3 then it is some form of permanant and you don’t do any more resist rolls.
Resist ends (special) (Fail x 3 = 24 hours)
Failing 3x isn’t easy, chances are higher and higher that someone would succeed, but the effects of Unending Charm are potentially very powerful as well.
There is also Potent Bane that you can get that gives disadvantage to resist rolls towards the bane chosen to help increase this chance of happening.
In addition, there is always outside of Stressful/Combat situations that are more narrative where the GM may work with you towards your goals using generic action rolls in combination with feats you have, but it all might depend on what your overall goal is with unending charm in a given circumstance.
