Okay, here's my questio-- I lied. Let me present the frameowrk for my question first. I have a villain who's signature ability is to cause someone to operate at a much faster pace than they would normally, burning themselves out.
The way I want to do this is SPEED, Usable Against Others. I want to add the Limitation(Advantage?) that the additional phases cannot be used to rest or recover, and the use of them costs endurance either from an endurance cost on the power itself(which was/is bought on a continuing charge for the villain) or perhaps a "rider" power added to it. The idea is a boost of speed and then a burning out from loss of stun after the endurance goes(I could also try to simulate "battle drugs" in a scifi setting or the like, I suppose). I can't see a clear mechanism outside of Transform for it, however(I want to avoid the END drain as a power option).