Art Appreciation is a common Sorcery card from Unfinity (UNF), collector number 385. Current market price: — (foil $0.25), TCGplayer market prices via Scryfall.
Put an art sticker on a nonland permanent you own. Then ask a person outside the game to rate its new art on a scale from 1 to 5, where 5 is the best. When they rate the art, up to that many target creatures can't block this turn.