Oracle Misfortune on Nat 1 or 20

[Dain Frostreaver]

So an interesting conversation came up regarding the Dual-Cursed Oracle revelation misfortune. The ability text is:
"Misfortune (Ex): At 1st level, as an immediate action, you can force a creature within 30 feet to reroll any one d20 roll that it has just made before the results of the roll are revealed. The creature must take the result of the reroll, even if it’s worse than the original roll. Once a creature has suffered from your misfortune, it cannot be the target of this revelation again for 1 day."
The question is can you use this ability on a natural 1 or 20? I assumed that the text "before the results of the roll are revealed" implied after the roll but before the GM stated success or failure. So as long as you use the ability before the GM says you hit/miss it should work. Someone else pointed out that on 1 or 20 for an attack you don't need to wait for the GM because it is a guaranteed hit or miss and therefore you know the results of the roll. Is there any official ruling on this? If not, how have/would you rule it?

[Cavall]

Well for 20s it could be a crit. Since the result isn't known, you can force a reroll. And you can't say "what about things that can't be crit" because you don't know until you try!

And 1? It says you CAN force a reroll. Why would you?

Anyways. You're over thinking it. Just make them reroll if you want to.

[Tyinyk]

You can. Until the GM says whether you hit or not, the results haven't been revealed, even if they're obvious.

[UnArcaneElection]

Cavall wrote:

{. . .}

And 1? It says you CAN force a reroll. Why would you?
{. . .}

Because one popular use of Dual-Cursed Oracle's Misfortune (unlike Witch's Misfortune) is to cause a reroll for an ally (or even yourself) who rolled really badly, since the odds are that the second roll will actually be better (odds 19/20 if they rolled a Natural 1).

[Cavall]

Well yeah. Obviously. But I clearly meant for people you're against.

If used the ability before.

[Rub-Eta]

Dain Frostreaver wrote:

I assumed that the text "before the results of the roll are revealed" implied after the roll but before the GM stated success or failure. So as long as you use the ability before the GM says you hit/miss it should work. Someone else pointed out that on 1 or 20 for an attack you don't need to wait for the GM because it is a guaranteed hit or miss and therefore you know the results of the roll. Is there any official ruling on this? If not, how have/would you rule it?

You are correct in your assumption.

But about the Nat 1 or 20: I can assume that any check or attempt I make with a dice result of 1,2,3 or 18,19,20 is a success or failure. But that's only an assumption. Even if I'm right in my assumption (and the assumption is also based on a general rule stated in the system), the result is still not revealed to me until it is absolutely confirmed by the DM.

[Leandro Garvel]

+1 for the 'you can still force a reroll' - natural 1/20 is an automatic miss/hit unless circumstances force otherwise, therefore until the GM tells you it's an auto hit you don't know the result for 100% certain.