"No, no Trouble in my files, but there's about to be an Isidor and an updated Viatorus..." Oh god. The dad joke. And he's chuckling at it. Well, that should give away something about him if either of them know family members who give in to the desire to tell dad jokes at all.

"Lots of things, actually. The whole concept is that an alchemist can take something, deconstruct it, and then reconstruct it into something of equal value. There's rules that govern what someone can and can't be do, such as forbidding the practice of changing lead into gold, but most mundane uses are allowed. I'm afraid I don't know the specifics about that, or of how or why it works." He gives them a small, apologetic smile for that.