[quote=@BCTheEntity]
We just need to establish an appropriate Energy Cost for this move, and all is golden.
[/quote]
I'm in two minds about that. On the one hand having an ability which uses your comparatively high Defence would call for a high cost, but on the other hand since you have no way of attacking without using the ability then a low cost would seem appropriate.

Hedging my bets I'd say a cost of [color=yellow]5[/color] would be best, since you could attack in the first and second round, but then would have to wait until the sixth round before gathering enough energy to attack again, but with the provision that you couldn't use your shields to defend yourself with on the same turn, use you'd be lowering your guard to make the attack.

You could also give yourself a subsequent ability like [i]'Charge Up: Divert all power to energy generation, gaining an extra [color=yellow]+1 Energy[/color] this round'[/i] in order to allow you to attack more often while using your defending rounds for something other than spectating. Or just take a basic +1 Energy regeneration trait for the same effect, although I'd expect [@Behemoth542] to put a higher XP cost on something like that.