What magic system fits this criteria well?

holy shit thats a lot

I know.

the criteria almost perfectly fits alchemy from fullmetal alchemist i think, it’s like your chemical conversion one but you aren’t limited in what elements you can control

what happened to distance

will be merged with motion or mass

should i directly rip the magic system (nearly) 1 to 1 for my story (not set in any preexisting verse) or probably don’t do that

it’s not a bad system, you’d just have to reskin it a bit if you don’t want it to be plain that it’s from fma

for the systems that have a general OHKO problem you could modifiy it so that users of those magic/abilities gain a natural aura that is able to negate some/most damage depending on their power, just a small and quick fix if you can’t find a system that works better

yea, or make it so you need direct contact in order to directly affect someone’s body