why do elves lose their magic when you touch them

Well, you see, it's because of the special powers we elves possess. We're not like ordinary humans, you know. Our magical abilities are a part of us, and they're also what give us our strength and endurance. But when an elf comes into contact with a non-elf, it's like a short circuit in the system. Our powers are disrupted, and we can't use them. It's like we're temporarily......neutralized.