and thereof unrelated Pokémon, such as Zangoose and Sableye. This set brings back the Mysterious Fossil from the Fossil set and expands on it with the Claw Fossil, which can be made into Anorith, and the Root Fossil, which can be made into Lileep. The Mysterious Fossil plays the same role as before, which is to evolve it into Omanyte, Kabuto, or Aerodactyl. Other Pokémon from older generations return, such as Xatu from the second generation and Psyduck from the first. EX Dragon EX Dragon, released in November 2003, is the 19th set of cards in the Pokémon Trading Card Game and the 3rd set released by Pokémon USA. The set's symbol is a crosshair. This set numbers up to 97 cards, but there are 100 with the 3 secret cards, and its main emphasis is Dragon Pokémon. These usually appear as Colorless-type Pokémon, but they tend to use two or more different types of Energy (an example is Salamence, which uses Fire and Water Energy). Many of the Pokémon in EX Dragon made their debut in the set. Salamence, Flygon and Altaria are three of the Dragon Pokémon in the set – others, such as Latios, Latias, Dragonite and Rayquaza appear as Pokémon-EX. EX Dragon is the first set in the third generation of the Pokémon Trading Card Game to be based on Dragon Pokémon; the other set, EX Dragon Frontiers, is the penultimate set of the same generation. EX Team Magma vs Team Aqua EX Team Magma vs Team Aqua, released in March 2004, is the 20th set of cards in the Pokémon Trading Card Game and the 4th set released by Pokémon USA. The set's symbol is a maroon "X" that's slightly slanted, somewhat like a cut or a scar. This set contains 95 cards and was the last set to feature e-Reader compatibility. EX Hidden Legends EX Hidden Legends, released in June 2004, is the 21st set of cards in the Pokémon Trading Card Game and the 5th set released by Pokémon USA. Its symbol is a trapezoid with six equally-spaced smaller dots surrounding it. This entire setup is within a solid white irregular hexagon. The Hidden Legends part refers to Regirock, Regice, and Registeel, Legendary Pokémon hidden away in stone structures. This set contains 101 different cards This set revolves around three concepts: Regirock, Regice, and Registeel, as mentioned above; Jirachi, a Legendary Pokémon with