Charles at least felt slightly better that whatever the man had been planning to try and convince his fellow captive in the circle to do? It seemed he wasn't likely to play along with the plot here if that response was any hint. And while he might be a ghost and thus can't typically feel things like temperature, the method of his own death, and the magic source of the chill here had it nipping at him too, even as the sorcerer's breath fogged the air. Which was only partly because of Loki, and partly because of the ghostly teen who prowled along the edges of the circle, dark eyes flicking intently over the runes etched into the floorboards.

"I'd listen to him, he's definitely got the right idea," Charles mused, glancing towards the wizard who was flipping pages with a more irritated air, masking whatever fright had him paling, had his pulse jumping along with a muscle along his jaw as the dropping temperature had hands shaking over vellum. "Whatever's willin' to trade for what you've got? Never ends well."