[quote=Scallop]
Would Thermo manipulation be cosnsidered OP?
[/quote]

As long as you don't abuse it.

@EVERYONE: YOUR POWERS HAVE LIMITS; using your power is exerting. IF you have thermo manipulation (not trying to pick on Scallop, just an example), if you crank up the heat to 1000 Celcius youre probably going to damn near kill yourself.