I don’t like the idea of this spell at all, the fact that she can possess a music box in Canterlot all the way from Ponyville just seems… overpowered? So theoretically could have items all over Equestria and beyond that she could just possess at any moment and peek in on what’s happening. Twi could run the Equestrian equivalent of the NSA all by herself. And on top of that, it’s not like its a difficult spell that requires a lot of energy and concentration, she literally tells Starlight it’s an easy spell and can show her how to do it later. Twilight’s entire contribution to the episode was questioning Starlight’s decision and stressing her out to the point of giving her nightmares about the sisters turning against each other.That being said… SHE’S SO ADORABLE.