[Luckily, with nobody watching from the cafe, the trip up to the Agency was a safe one. And while they were in the elevator, Bedivere elaborated on what he had said before.]

It might be best to think of magic as similar to a fighting style. If you train under a master swordsman, your style will be like his. Likewise, your magic reflects what you do with it.

But with you, it's like there is a negative space around you where magic doesn't exist. But that area is very small and localized, so it's easy to tell that you're the one at the center of it.