The outside person is rating the new art, considering the way the sticker synthesizes with the original art. Does it produce a harmonious aesthetic? Does it make a worthwhile commentary on society? Does it present a fresh viewpoint in a landscape rife with imitation and vapid regurgitation? Or, if they must . . . is the sound effect funny? Sigh.

Art Appreciation doesn’t target the nonland permanent. You choose which one is getting the sticker as the spell resolves.

If you don’t put an art sticker on the permanent because you don’t have any available, the outside person should rate the card’s existing art. Perhaps they should dock you a point or two for your lack of originality. Who are we to say?