astronomy in the Pokémon Ruby, Sapphire, and Emerald video games. Of the franchise EX Emerald EX Emerald, released in May 2005, is the 25th set of cards in the Pokémon Trading Card Game and the 9th set released by Pokémon USA. Its symbol is a gemstone, presumably an emerald. It has a set of 106 cards. Nintendo released six 15-card packs, known as Quick Construction Packs – one pack for each type of Basic Energy. The set is also composed of Japanese promos that were never brought outside Japan. Because of this, and the fact that most promos are viewed as "unplayable" in the competitive scene, this set was largely ignored, with exceptions to Medicham ex. EX Unseen Forces EX Unseen Forces, released in August 2005, is the 26th set of cards in the Pokémon Trading Card Game and the 10th set released by Pokémon USA. The set's symbol is a black silhouette of Ho-Oh's wing, superimposed on a white silhouette of Lugia's wing. it is a set of 115 cards, plus 2 secret cards (including the box topper), plus 28 Unowns. The set, which in Japan was named "GoldenSky and SilverSea", is set in Johto, and is the first set by Pokémon USA to mainly consist of Pokémon from the Pokémon Gold and Silver games, released in 2001. EX Unseen Forces is known for having more Pokémon-ex than any other set to date, with a total of fourteen (including one box topper and one secret rare card). EX Delta Species EX Delta Species, released in October 2005, is the 27th set of cards in the Pokémon Trading Card Game and the 11th set released by Pokémon USA. It contains 113 different cards. While this set was released after EX Legends hit in Japan, it was released before Legend Maker in English-language territories. The set, which in Japan was named "Researching Tower of Holon", is set in the research centre, Holon. Its logo/symbol is Holon Tower, a tower with a broad top floor. This set introduces rare "Delta Species" Pokémon, which are unusually unique types. For example, Tyranitar would typically be a Dark- or Fighting-type Pokémon, but in this set Tyranitar is a Metal/Fire dual-typed Pokémon. Dragonite would typically be a Colorless- Pokémon, but in this set Dragonite is a Metal/Lightning dual-typed Pokémon. It also introduces the staff of Holon Tower and their Pokémon. The Holon staff appears in the