| thuryl |
I don't think "before the results of the roll are revealed" can possibly be intended to mean "before what number was rolled is revealed" -- if it means that, then there's never any expected benefit to forcing a reroll, because you have no information to determine the odds that the new roll will be better or worse. I think "before the results of the roll are revealed" has to mean "after you see what number was rolled, but before it's declared whether that number was enough for the roll to be a success"; that's the only interpretation that makes sense to me. (Plus, "a roll that it has just made" implies that the die has already been rolled at the time that you force the reroll.)
As for the original question... well, it seems pretty clear from Misfortune's name that using it on allies wasn't something that was considered when it was designed. But if you're going to allow it to be used on allies, I'd say that yes, the last sentence should just be taken to mean that you can't cause the same target to reroll more than once in one day.