Team Up arrived in early 2019 as a bridge set during the Unified Standard format era. Released during peak interest in the Pokémon TCG's modern resurgence, it introduced the TAG TEAM mechanic—cards featuring two Pokémon working together. This mechanic became defining for the era, offering strategic depth and collaborative gameplay that captivated competitive and casual players alike. Mr. Mime GX showcases the psychic-type Pokémon in its TAG TEAM form, pairing it with Alolan Muk in a striking collaborative design. The artwork captures both Pokémon in dynamic interaction, making it visually memorable alongside its playable potential in Psychic-focused decks during its competitive window.