| Mysterious Treasures|
|Cards in set:||124 131|
Mysterious Treasures (湖の秘密 Secret of the Lakes) was the second TCG expansion set of the Diamond and Pearl series. It was released on 02 March 2007 in Japan and 22 August 2007 in the US. This expansion set contains 131 cards in Japanese and 124 cards in English.
Seek new Pokémon and you shall find... Mysterious Treasures! In the new Pokémon Trading Card Game: Diamond & Pearl—Mysterious Treasures expansion, players will catch the next wave of brand-new Pokémon that no Trainer has ever caught before. In addition to some great new gameplay options like Pokémon with Berries, new Fossils, and more powerful Pokémon LV.X, Mysterious Treasures includes a parallel set with a brand-new holographic treatment! Pokémon TCG: Diamond & Pearl—Mysterious Treasures features more than 120 new cards and remains compatible with previous releases.