The 2023 UD Marvel Beginnings Vol 2 Series 2 Green Rainbow Mirror World FLAT MAN trading card is a limited edition collectible featuring the character Flat Man from the Marvel franchise. Manufactured by Upper Deck, this card is part of a print run of only 61 copies and is serial numbered as 56/61. With a unique Green Rainbow Mirror World parallel/variety, this non-sport trading card falls within the superhero, action, and comics genres and is a must-have for Marvel fans and collectors alike.