The Grookey 052 30th Anniversary Black Star Promo card is a special edition collectible card from the Pokémon TCG series. This rare card features the character Grookey and is part of a promotional set celebrating the 30th anniversary of the franchise. As a Black Star Promo card, it is highly sought after by collectors and players alike for its unique design and limited availability. The card number 052 adds to its rarity and appeal among fans of the Pokémon TCG.