The idea of the whole castle going up in flames suddenly presented itself properly to Spencer and he blinked, unwillingly torn away from the situation at hand for a moment by the memory of the last time he had seen that; Fiendfyre crawling its way up the stone walls, the castle collapsing in on itself, too many of them trapped inside. He almost looked around to find the group of them standing on the grass arguing over who should go back inside, and shuddered.
Shaking his head, he forced himself to pay attention, nodding at Mikey's prediction. "It's about time we took it back," he agreed, voice low, and looked back over at where Gerard seemed to be telling Jon properly about what was going on.
He rubbed his beard absently, thinking. "Probably the best place to get at them will be right in the Entrance Hall," he said. "Keep the kids in here, stop them from going forward. If we can make up some kind of barricade, too, to give us some time before they reach us." That left the problem of the elves in other parts of the castle, though, who could sneak up behind them, but -- one thing at a time.