She nodded, even a little proud at the fact that he knew.

"That's what a glamour does. It fools the senses into thinking something else is happening. Ninety-nine times out of a hundred, it's the eyes that are fooled. After all, if sight wasn't so easy to play tricks on, half the magicians in my world would be out of a job." A pause to let that sink in before she continued. "This one, though, took a lot more effort and focus. And it's why I needed Baby Tooth's help. You and she come from the same world, and run on similar enough rules of magic. Instead of fooling our eyes, it's fooling our sense of touch."

Incredibly complicated magic, to be sure, and something that had required more than a few sleepless nights and deviations to the Advanced sections of her work library selection. Particularly as Jack'a nature itself was magical, and needed to be taken into account when she fine tuned the ritual.

"In short...as long as I'm wearing the charm, your cold can't hurt me. I won't even register it."