Matthew shrugs. "I know magic when I see it." He wouldn't be worth his salt as a sorcerer if he couldn't.

Speaking of which, the moment Donnie looks though the goggles at Matthew, he'll be able to tell that Matthew reads as magic as hell. He's a sorcerer for one, which means he lives and breathes magic. And then there's them.

Them, aka the Blue Electric Angels, aka a magical entity usually described as being somewhere between angel, devil, and god. They're in here too - though whether Donnie's goggles are able tell the difference between their magic and Matthew's will depend on exactly how fine-tuned those goggles are.