"Um... if you let me out of the circle I could just go away somewhere and then you wouldn't be in any trouble?" he suggests tentatively.
"I have a lot of mind magic. I can let you out of the circle, as long as it's safe, and then you won't be stuck there while Korulen works on being able to send you home," explains Keo. "I won't look at anything that doesn't have to do with whether you're going to hurt people or break laws or things like that."
This is not the face of someone who expects to pass this test.
"...cool," he says, brightening. "Thanks." He gets up and gets out of the circle. "...Can I have some gemstones now?"
"No, I eat regular pony food too. I don't know what counts as regular people food around here, though, apparently you eat animals sometimes and that's weird."
"Almost all the people who live in Equestria are ponies. They're... ponies. They have four feet with hooves and ones who have horns are unicorns and ones who have wings are pegasi and ones who have neither are earth ponies and ones who have both are princesses. And they don't eat meat. Because they're ponies."
"Oh, people do that all the time anyway, it's fine. Where would you put me that's not a dorm room?"