Oh. [He has no idea what 'cast' means, but he supposes it must be some sort of magic. Which is wild - that sort of thing doesn't exist where he's from.

He looks at the spreading goo, then at Caleb. His gaze is frankly pleading.]

That's fine. I don't know what this is but it's scary. Maybe just like, warn me if you need to grab my balls or something.

[Because that's likely?]