[Refplace]

For the cap on how much you can spend per turn I would go with a limitation and mitigator for it that lets you work around it with others help.
Given how slow it recharges I probably would call it a very minor limitation or Feature but it would depend on setting and builds.
Others could then buy Healing or Affliction with a limitation that the energy had to be used immediately.
Dedicated Controls would be much cheaper though and you could still limit how much you can draw at once from a single source.
I had another idea that I sent into Pyramid but cant talk about it since it may eventually get published.