It depends. There are some moves where you can get away with it more easily than others. For instance, let's take a look at the FanFic writer's secret weapon, Metronome.
Metronome can be used to do pretty much anything, because of the very nature of the move, coupled with the idea that 'you never know what will happen with this move'. Since this move can potentially do things that wouldn't have been discovered at the time (such as using an attack from another Region, even if the Pokémon has never seen the attack, and it would normally be physically impossible for said Pokémon to use the attack), it becomes an 'anything goes' move. With a little thought and creativity, you can literally make it do whatever you want it to do, and you've got a valid reason for it happening. I'm actually surprised that more people don't use this move as a plot device, because it's one of the best tricks a writer has.
There was a point where I had a Pokémon use Metronome in a battle, and a misfire of the move caused the characters to be sent to an alternate dimension where they crossed over with another franchise. I'm not saying you have to do something extreme like that, but you could have it teleport everyone to another Region, or do one of a billion other things (reviving the dead, for instance). That's the nice thing about Metronome. You can do whatever you want to do with it, and it's hard to argue it. Some people might try to argue that the description only mentions attacks. But that's a weak argument, because the description is different for each Gen, and even Pokémon researchers will admit to not knowing everything about Metronome (after all, it's impossible to know everything about a move that you can't predict).
The only thing I would say is this can be done once, maybe twice. But I wouldn't use it too often. If you start relying on it, then your Fic will become repetitive and predictable. But I'd say it's probably one time where you can get away with anything you want to do.
Last edited by SBaby; 19th January 2014 at 5:41 PM.
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