Find your hidden advantage!
Get a huge edge on the competition when you discover the EX Hidden Legends! These powerful Pokémon are sealed in three ancient ruins, waiting for you to help break them out. Then combine them with new Dual Energy Type Pokémon, Pokémon-ex cards, and the latest deck building strategies, and your opponents will want to go into hiding!
EX Hidden Legends is the name given to the fifth main expansion of the EX Series of the Pokémon Trading Card Game. In Japan, it was released as Undone Seal, the fourth and final expansion in the Pokémon Card Game ADV Era. It is based on Pokémon Ruby and Sapphire, featuring Generation III Pokémon and the Legendary giants Regirock, Regice, and Registeel. The English expansion was released on June 14, 2004, while the Japanese expansion was released on January 16, 2004.
Due to the removal of the Dot-Code strip, the bottom border of the card returned to normal. The Reverse Holofoil cards featured a new design. Several Holofoil Energy symbols appeared on the artwork. The type of the Pokémon was displayed as a faint foil symbol in the attack box. Reverse Holofoil versions of the Rare Holo cards have a foil rarity symbol.
The Undone Seal set is only released in Japanese, in both 1st and unlimited edition. The EX Hidden Legends set is released in English, French, and Italian, with cards also available as Reverse Holofoils. The non-holo Uncommons in the Japanese, English, French, and Italian sets are available with two different codes at the bottom-left; the non-holo Commons in the Japanese set are available with four different codes at the bottom-left; and the non-Holo Commons in the English, French, and Italian sets have three different codes available. The purpose of these different codes is still unknown, but occurred throughout the first halve of the EX era.