Originally Posted by
Kanegasi
The only thing addon-related I can find is HealUI. If you are using that, the counter is supposedly between your health and mana/rage/etc.
If you aren't using that addon, try searching for PlayerPowerBarAlt in MoveAnything. If it's not in there, try /move PlayerPowerBarAlt. Many special counters use that, but I personally don't know if that's the frame you're looking for. I'm away from my computer, but if I can remember, I'll do something to pull up a counter and see what frame it is.