Mattel's 2023 UNO Marvel crossover brought the iconic card game into the superhero collecting space, blending two beloved entertainment properties during a period of unprecedented crossover enthusiasm in the hobby. These themed decks captured the energy of Marvel's vast character roster while introducing UNO mechanics to a new audience of comic and card enthusiasts. The Green 7 subset became a distinctive piece of modern entertainment licensing. Black Cat represents one of Spider-Man's most compelling supporting characters, a skilled anti-hero whose complex relationship with the wall-crawler spans decades of comics. Collectors appreciate her prominent place in this crossover, seeking out cards featuring her striking appearance and distinctive role within the Spider-Man mythos.