Right, that's what he'd said. Although Isaac still wasn't sure what each kind of magic was -other than the obvious. It was still pretty cool. He'd thought that maybe Deaton was some kind of magic user, but he was just a somewhat mysterious dude who knew a bunch of things.
"So, it's magic or you hit things with the staff?" Made perfect sense, really. Magic or weapon, whatever worked. Demons were probably just as easy to whack with a magical staff than not.
"Yeah, um, I think I ... I'm not sure. It might be a spirit." He hadn't actually asked about how shifting worked. He knew he got bit and then he was a werewolf. "I was made like this, I used to be human. But then Derek turned me. He was born a wolf, so...maybe it's magic?"