Sun & Moon Black Star Promos launched with the Sun & Moon era, marking a pivotal moment when Pokémon TCG embraced full-art designs and dynamic compositions. Released in 2017, these promotional cards captured the franchise's renewed energy following the Nintendo Switch games' massive success. The Black Star series became collector favorites, representing an accessible entry point to premium modern Pokémon cards while establishing design trends that influenced years of subsequent releases. Tapu Koko GX showcases one of Alola's guardian deities in striking form, rendered with the vibrant color palette and expressive style characteristic of this era's promotional artwork. As a GX card featuring this iconic Electric-type, it holds particular appeal for players and collectors drawn to competitive playability and the aesthetic excellence that defined Black Star Promos.