Rainbow Energy (210/XY-P) is a holographic special Energy trading card from the Japanese Pokémon TCG XY Promo series, issued during the 2016 Start Dash campaign. It features foil art by 5ban Graphics with a silvery star orb at the center and swirling multicolored rainbow rings on a black cosmic background, all framed by a shimmering star-pattern holo border. As a special Energy card, Rainbow Energy provides every type of Energy (while placing a damage counter on the attached Pokémon), making it versatile in multi-type decks. Collectors note its limited release and classic XY-era artwork, making this promo a unique, nostalgic collectible for Pokémon TCG enthusiasts.