"That is because I'm not a treatise," she says reasonably. "I'm a unicorn. And I was trying to bring back a dragon who disappeared a little while ago, but the spell I'm using has trouble distinguishing people except by broad obvious categories like species... maybe it got confused some other way. Do you know anything about a green and purple dragon suddenly appearing somewhere near wherever you just were? He's about this tall," she floats a book to a Joy-ish height to illustrate, because even if she stood on tip-hoof she'd be much too short to gesture it herself, "and his name is Joy and he's very friendly and helpful."