Move Creation Workshop

[Takanomiya Hijiri]

The only reason I bring it up is because a move for a gun costing 300 OM doesn't require that line, or shouldn't.  The precedent being my Czerka Arms Pistol.

That's hardly the only example. There are plenty of gun moves on the site. I'm still not too sure whether you're talking about the actual recoil ("it also has a very powerful recoil, so firing frequently will quickly tire Matthew") or the bit Matt added ("This gun is moderately draining on his stamina, and strength to use"), or both... regardless of which it is, however, there's no rule on the site that says people can't have moves similar to other peoples but with additional drawbacks... if he makes his gun more tiring to use, then it'll be more powerful than yours.