The Gengar (Cosmos Holo) GameStop promo card is a highly sought-after collectible in the Pokémon TCG community. This exclusive card, with card number 050/088, features the character Gengar with 130 HP, making it a valuable addition to any collector's deck. Illustrated by Masako Tomii, this holo card from The Pokémon Company is a rare find and a must-have for fans of the Pokémon franchise.