Another option for dealing with prophecies in a game campaign is to have prophecies, and have NPCs seriously believe that they're super important and impossible to avoid - but have them just be a complete bunch of hokum. This gets you as the GM completely out of any obligation to try to make a prophecy come true in any way. It doesn't matter if it never comes to pass, because whoever stated the prophecy was just making up any old rubbish.
If done right, this can still be an effective way to convince characters (and even players) that there is something to the prophecy, and that they have to be super careful to either avoid it or fulfil it (whichever they believe most desirable). Just don't let on that prophecies in your game are a load of tripe, and let them believe that they have mystical power.
Commentary by Keybounce (who has not seen the movie)
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Commentary by memnarch (who has not seen the movie)
Oh I like this twist. Someone's gotta do the choosing, so why not have an appearance of the chooser? There's no way this is anywhere close to the movie scene though, right? Suddenly having The Force not have a mystical/spiritual component to it doesn't seem right. Though the original Star Wars did have Han Solo doubting that The Force was anything more than a hokey religion, so I guess having a callback to that wouldn't be out of the blue.
Hmmmmm... And maybe this is also something that's going to push Finn towards team good-guy? A spy/traitor redemption bit sounds quite reasonable for a Disney movie, even in Star Wars. Unless it's been changed for the new movies' history, stormtroopers weren't clones anymore after Episode III, at least if I remember the Battlefront II story campaign about how the Empire came to be correctly. And if that was actually canon to begin with. So troopers that get second thoughts and desert when they get a chance? Sounds like it'd fit in just fine with the First Order attempting to pull a "we're the new Empire now" move.
Finn: What? Me??
Finn: What about all the “Chosen One” stuff?
Darth Kanata: I’m choosing you. You’re the Chosen One now.
Finn: That’s... not how it works?? Surely?
Darth Kanata: Kid, I’ve flown from one side of this galaxy to the other. I’ve seen a lot of strange stuff.
Darth Kanata: But I’ve never seen anything to make me believe any prophecy is worth a damn. There’s no mystical prophecy that controls anyone’s destiny.
Darth Kanata: Someone screwed up, and someone’s gotta fix it. May as well be you.
Finn: But... what do I do?
Darth Kanata: Let me simplify it for you. Kick some ass, get the girl, and try to look dope while you do it.