Tingles were still spreading, and John was mostly ignoring the sharp edge of pain to them, deciding to focus on the adrenaline and the power rush that came with using his powers anyway. "That might work."
There was enough of these beast things that getting them into a location wouldn't be hard. They trailed towards the fire a lot, like moths or fireflies, either attracted to the light or the heat. But they also burned pretty spectacularly too, even if it took a little bit to get them really smouldering. "They follow the flames, if we get them kind of centre mass, you could cage them in."
John at least knew his limits, he couldn't maintain that big a place, although he could feed it.