Just wanted to lay this idea out so it stops clogging my brain

This isn't a very fleshed-out system, since it really only started as a thought experiment, but I figured I might as well share it to see what other people think.

Other people have probably already made something like it before, but eh.

Basically, imagine a power system based around transferring energy. Like mechanical advantage, but for every type of energy.

Basic applications could be taking the heat out of the surrounding area to create fire, absorbing the kinetic energy of a blow and redirecting it into your own punch, redirecting electricity, etc.

More advanced users can transfer different energy types between each other with equivalent exchange. Enough heat can be turned into a bolt of electricity; you could make lifting a rock very hard but heat up the rock in the process, pushing or pulling on something to change other attributes, or turn heat directly into light rather than getting something red hot.

What do y'all think? I know it isn't much to work on, but it's basically just for fun.