POP Series 6

Pokemon POP Series 6 is a Japanese trading card game (TCG) set produced by Pokemon Company in 2004. It contains 66 multi-colored cards, all of which feature characters and creatures from the popular Pokemon franchise. Popular Pokemon featured in the set include Ho-Oh, Lugia, and Rayquaza, plus the Water-type Magikarp and Ground-type Groudon. The set also includes a variety of Trainer, Supporter, and Energy cards.

The set introduces the concept of Delta Species, in which certain Pokemon cards can be combined with corresponding Energy cards to create new versions of existing Pokemon. For example, Delta Species versions of Charizard, Machamp, and Blastoise were introduced in the set. The set also contains "dual-type" cards, which feature two types of either Pokemon, Energy, or Trainer cards. This set was the first to feature many promotional card designs, including an Eat-it-All promo card and a Roar of Time Ex Delta Species card.

The set marks the first appearance of Delta Species Pokemon cards and introduced a number of new game mechanics, such as the combination of non-Energy cards with Energy cards to create higher-powered versions. Additionally, the set has a focus on dragon-type creatures and includes high-power, dual-type cards like the Charizard Delta Species card and the Machamp Delta Species card. Overall, POP Series 6 of Pokemon cards is a powerful set with a lot of new and varied cards, making it an exciting and interesting set for collectors and competitive players alike.