The "Holon's Castform" card is a rare, Colorless Basic Pokémon card from the EX Holon Phantoms set of the Pokémon TCG. Released as part of the 2007 World Championship collection, this exclusive card features a Standard card size and a regular finish. It is a promotional collectors edition card produced by Nintendo in English language, with a card number of 44/110, making it a desirable addition for collectors and players looking to expand their Pokémon card collection. Suitable for ages 4 and up, this card holds value for both its rarity and its unique design.