[@olcharlieboi] So maybe if it's versatile it could be limited to energy based stuff or something? I mean just for an example, the "spells" if you will could just be his way of remembering how to do everything? Maybe in it being so versatile it's hard to do the same thing more than once, so the "spells" are prone to alterations or "mutations" if you will? That could make for some rather unwanted or possibly useful side effects.

An example, if a few times before he'd tried to create lightning, the second time it could come out red for whatever reason, and another time it could randomly start crackling all over the place? Versatility would likely be restricted by that kind of lack of control, which could obviously be honed in time.

Again just an opinion/suggestion, and that'd be my take on it. Depends whatever you think's fun, you're the boss :P

Edit: IMO the range of stuff his spells can do should be limited if you go with that option, just because anything's possible shouldn't mean everything should be :P otherwise it'd seem to just be a beefed up version of Momo's quirk