I'm confused here too. There's a wizard, a gunman, and a room full of magic. Somebody wants the gunman's gun to be hexed.

If the GM wants the gun hexed, it's easy. GM throws the gunman a FP and says "there's a lot of ambient magic here. Your gun goes click...fizz...nothing. Guess something's wrong" (revealing and compelling a scene aspect)."

If the wizard wants an "unintentional" hexing of the gun, she invokes her High concept and pays a FP. And then the GM hands the FP to the gunman and says "ah, gun no worky."

If the gunman, for some reason wants their own gun hexed, it's a pretty easy self compel on the magic every one knows is in the room. Gunman gets paid.

Things change up a smidge if the wizard or the gunman is an NPC, but not very much.

In a game designed to create player fun, rather than simulate reality or present challenges with objective neutrality, the GM shouldn't find themselves in a position where cheating is necessary to achieve player fun.

The game has lots of options available for a creative GM. NPC too powerful? Look fir a way to Self compel and take a fate point for later.

But yes, there are potential plot hooks in that idea.

Something mighty big must be guarding that place.

@MrD: I'm basically with you in the reload while dodging melee weapons issue. Though, I'd probably use compels in most cases. If they're willing to buy off the compel, then I guess they are able find a quiet moment in the storm to reload that musket. Works for me.

What about the traces you leave in the minds of those you meet? Are those erased as well?

The players played the aspects so I didn't feel a need to tag them and they WERE headed in the right direction for investigation.  so what am I doing wrong?

Did they play their aspects in a way that made their lives more challenging and led to unexpected complications?

We wrapped up a long campaign set in Los Angeles where we had been framed for the murder of our mentor by a rogue warden. One great moment, we were ambushed on Sunset Blvd. by some Red Court infected gang bangers. My sorcerer had taken a car door to the face and was down. The sink hole I'd opened up with a failed discipline role was growing and Getting closer. Morgan's wizard had fried himself pretty bad with his last big spell. The Red Court hitters were coming for me machine guns in hand. It was clearly concession or taken out time...and then I smile at the GM.

Flashback to a couple sessions ago, when my character was glibly chatting with Nuada the Summer Lord of Hollywood who would offer us protection if I promised to find his lost Sword of Light. While leaving one of the Summer Ladies gives me her favor, a handkerchief that bore the lipstick impression of her kiss, and a pledge to come if I called...

So, in rides a Lady Knight of the Summer Court alternatingly on a supercharged motorcycle or powerful warhorse to save my bacon. And now I'm indebted to Summer. Unfortunately I had earlier pledged three favors to Winter for their help in saving a friend of mine and, wouldn't you know, their first request? Lord Nuada's golden sword.