John followed the two to the chamber of the altar, and viewed a strange assortment of individuals arrayed about the room. A feathered damsel, an armored dame, a pair of twins, a soldier from a type 4 civ (probably another local), a fifty something whose features imply kindred to Zesiro, an older gentleman whose rougher clothes signify a type 3 civilization of origin, a soldier from what looks like a very early type 4, a cloaked man with the telltale signs of a heavy drinker, a man out of a fantasy novel, the man who had set himself on fire... and John's earlier acquaintances Zesiro, Gemma and Tyrael.
John began to open his mouth to remark on the ragtag group, when his sweeping gaze began to take in the building itself. As dilapidated as it had seemed on the outside, the damn thing was revealed to be a whole lot worse on the inside. John looked around at the castle, calculating its mass. John had never really paid attention in magical theory courses, had slept through most of it in fact, and now he was wishing that he had.
A mage could burn up their own body in order to extend their limits. That was the theory, but of course, it wasn't recommended or actually taught, and the calculations where only shown to show people how bad of an idea it is. According to John's quick calculations, he might be able to fix the castle... if he didn't mind burning up so clean he was turned to vapor in the process. That is, if his calculations where correct, which they might be if the stone was as dense as he thought, and the walls as thick as he thought and the castle as many stories as he thought and the calculations were done in the way that he thought. For all he knew, he could burn up and just collapse the roof on everyone.
So when Zesiro's brother took action instead, John was quite relieved. He was rather less relieved to know that the only thing standing between the avalanche and everyone else was a dome of corpses made by a single man, which, in his experience, should be completely impossible.
When the shaking stopped, John spoke "...Alright then. Who's in charge here? There's an irritable lizard outside that I've got some tasty information on; you can thank her for our sudden superfluity of snow by the way. Share some winter gear and I'll share what I know?" he finished off with a roguish grin, holstering his weapon swiftly.