[quote=HollywoodMole]
I feel like if you have a small power level at the start, and it's limited, then you should be able to use it a lot. However, if it get's really powerful, I think it should have a large reuse time or something. [b]I know this may sound stupid[/b], but i've seen people make it work.
[/quote]

Doesn't sound stupid to me. Heh... Dragonball used that idea a lot. More power you used, the longer it took to gather it. To "charge up".