Re: [Action]
Male. Someone that has had a series of incidents where they just didn't have enough power to overcome whatever was in their path. Magic is just a vehicle by which this power manifests, in more mundane terms, it could simply be status within a company or problems with figures of authority.
They may be attempting to gather this power together for a vengeance plan against whomever they consider their biggest threat. Perhaps even Acumen or Sentience. The fact that the area of effect is so large indicates that there is no discrimination between victims and that the target of this energy is the key. If we can determine the target, then we can find our unsub. We just have to do it before the desired amount of energy is collected. [He's losing a little steam, here. But he's pushing on as long as he can.]