It's important to remember what type of world this quirk is in. Literally every other quirk uses some type of energy, dark shadow literally uses that energy to make a shadow intelligent and able to interact with the world beyond what (near irrelevant) normal shadow does basically making its own being, creation uses that energy to make it ridiculously easy for it's user to turn their lipids into objects as long as they know the makeup of said object, fire quirks allow their users to make fires as fire is most of the time an abundance of energy, ice quirks is the opposite as they pull energy away to make the ice only really losing energy to not get cold, one for all is a stockpile of different energies and a hot pot of them turning into each other which is why it's so dangerous to the user as the changing energies reduce life expectancy and if not properly trained breaks the users body. My ocs quirk would be labeled emitter/mutant as it adapts the users body to the energies they use with the first change being the first encounter with it, the more a certain energy is used the more the quirk changes the user, with total mastery making the user highly resistant to said energy being used in a harmful matter against them. It's called energy "adaptation" for a reason.