primarily by Dragon Pokémon. This set marks the final appearance of Delta Species Pokémon, and, strangely, almost every single Pokémon card is Delta Species. There are even "Delta Star" Pokémon, Mew and Charizard, whose type depends on their alternate color (Shiny form), which is, in this case, Water and Dark, respectively. This set introduces a new mechanic: Shockwave and Imprison markers. These markers are similar to special conditions, save that they can be applied to benched Pokémon and that they don't go away when the Pokémon retreats. Only three cards in the set use these markers, however: two Pokémon place the markers, and one Pokémon can remove them. EX Power Keepers EX Power Keepers, released in February 2007, is the 32nd set of cards in the Pokémon Trading Card Game. The symbol for this set is a road leading to a vanishing horizon on which the sun is either rising or setting. It is a set of 108 cards. It is the first set since EX Emerald to be released only outside Japan, and the first since EX Unseen Forces not to include Delta Species Pokémon. The set is loosely based on the Hoenn Elite Four, as all four members (Drake, Glacia, Phoebe and Sidney) have their own Stadium cards, and the Pokémon-EX are all Pokémon owned by members of the Elite Four. The set also consists of several reprints of cards from older sets, and is the last third-generation set. Fourth Generation Sets All of the Fourth Generation sets have the words "Diamond and Pearl", "Platinum", "HeartGold SoulSilver", or "Legends" in their names; this comes from the Pokémon Diamond, Pokémon Pearl, Pokémon Platinum, Pokémon HeartGold and Pokémon SoulSilver video games present in these sets. Diamond and Pearl Base Set Diamond and Pearl Base Set, released in May 2007, is the 33rd set of cards in the Pokémon Trading Card Game and the 17th set released by Pokémon USA. Its symbol is a circle in an upside-down pentagon. it is a set of 130 cards. The set is the first in English-language territories to include fourth-generation Pokémon; namely, those that first featured in the Pokémon Diamond and Pearl video games on the Nintendo DS. Several new rules were introduced to the Pokémon Trading Card Game with the release of Diamond & Pearl Base Set in Japan, and several changes have been made to the format of the cards; some of