Platinum Base Set is the 40th set of cards of the Trading Card Game and the 24th released by Pokémon USA. It was released on October 13, 2008 in Japan and in the United States on February 11, 2009. It introduces the never-before-seen Pokémon Shaymin and includes a new Trainer-specific variant of Pokémon known as Pokémon SP. The set also includes a new mechanic called the Lost Zone, which acts as a second discard pile but one from which players cannot retrieve cards. It features two theme decks, one built around Shaymin, "Flourish", and the other around Renegade Pokémon Giratina, "Rebellion". Platinum includes six Pokémon LV.X, two of which are Shaymin (one of Land Forme and one of Sky Forme), and 127 cards in total. The set includes 6 secret cards. Two of the Pokémon LV.X were released as promotional reprints with new artwork on March 2, 2009. The new Pokémon SP includes Team Galactic Pokémon like Dialga G.