I know you meant the reveal of a manipulative side, but now I'm just imagining like, a magical girl and her mascot watching in horror as the town burns down or something, and the mascot confessing that "I'm sorry, I'm an idiot! I pretended to have all this arcane knowledge and like I was all mysterious, but I really just fell into having these magic items to hand out by accident! After you let me bum around your house for free, it felt too awkward to admit I don't actually know who you're fighting or how any of this stuff works!"