[His words are received with a quick scowl on Casey's part.]

What? That's stupid… nobody's worthless just because they can't do one thing. This just means you cast magic a different way, right? Why does that matter?

[This is a dumb concept! Even if he couldn't use magic at all, he wouldn't be worthless. Casey gets by just fine without, and he's never not found a way to contribute… who are these jerks calling him worthless, Casey will punch them >:( ]