EX Holon Phantoms, released in May 2006, is the 29th set of cards in the Pokémon Trading Card Game and the 13th set released by Pokémon USA. Its symbol is the Holon symbol, with three triangles around the sides. The set, which in Japan was named "Holon Phantom", is set in an undeveloped area of Holon. It marks the return of Delta Species Pokémon, after they debuted in EX Delta Species. This set contains 110 Cards in total. The back of the cards from this set has a lighter back than other sets.