This holographic Mew trading card comes from the 2001 Pokémon TCG Southern Islands promotional set, a limited 18-card mini-set with a tropical island theme. The illustration depicts Mew floating in a pastel rainbow sky, accented by shimmering holo stars and the Southern Islands palm-tree logo in the corner. As a Psychic-type Basic Pokémon with 30 HP, it carries the unique “Rainbow Wave” attack, which deals 20 damage to each of the opponent’s Pokémon of a chosen type. Collectors prize this alternate-art promo for its nostalgic first-generation appeal and distinctive foil design, making it a valued collectible in any Pokémon TCG collection.