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DFRPG / Re: Hexing! We got a problem
« on: December 06, 2012, 11:10:23 AM »If the caster says that the ambient magic of all of his casting should hex the gun mans gun (without an action) then its a compel.
The OP's situation clearly fits into this category. It was a case where the ambient magic was causing hexing as a side-effect. The trouble was that it felt like it should be a compel, but you can't compel someone without an aspect to compel. Because it was not deliberate hexing, there had been no mechanic (such as a maneuver) to establish an appropriate aspect on the gunman to compel.
The solution that I feel provides the most appealing fit of mechanics to purpose (for both PCs and NPCs) is for the caster spending a Fate Point to make a Declaration to apply an appropriate aspect (e.g. "Buzzing with ambient magic!") on the scene/zone and then the players in that scene/zone can be compelled using that aspect -- if the caster pays a Fate Point for each player being compelled (see "Scene Compels", page 107). What is especially tasty about this approach is that the new aspect provides further invoke/compel possibilities that may not have been initially anticipated (and can plausibly backfire, if the caster has friends who are also using technology!).