The 2020-21 Panini Mosaic NBA Debut Killian Hayes #270 Reactive Yellow Prizm (RC) is a sought-after sports trading card featuring the up-and-coming basketball player Killian Hayes. Manufactured by Panini, this card is part of the 2020-21 Panini Mosaic set and showcases a parallel variety with a striking yellow prizm finish. It is a valuable addition for collectors, especially those interested in rookie cards from the National Basketball Association (NBA).