[Eh, he's been called worse. You don't grow up being the kid who brings snakes to show & tell without earning some nicknames. He moves to watch him disassemble the thing, curious himself, and wishing he had a pen and paper.]

Iron is your big one. It's just about universally fairy kryptonite. Silver is a purifying agent and seems to be one of the better conductors for some types of spellwork. Because of that, you can sometimes use silver to disrupt active spells. Kind of like an EM burst, I guess.

And it's Alex, by the way. [He actually puts effort into not making it sound like a snarky aside or jab. He's been kidnapped enough times by now to know that formal introductions don't usually happen until well after the immediate threat of death or worse is passed. Which he is mostly sure it has, for the time being.]

And I really need to press again that this isn't my field. I'm giving you Wikipedia stub level basics here. If I could find something to dissect- preferably something already dead- then I could tell you something I'd be certain about. Until then, put everything I'm saying into the category of barely-educated guesses.