From September 9 until September 29, Pokéfans can visit their local GameStop to pick up a special shiny version of the legendary Pokémon Palkia.
This marks the second leg of a promotion in which GameStop is offering gratis shiny, legendary Pokémon to build hype for the October 12 release of Pokémon X and Y. During August GameStop offered players a shiny Dialga, while October will see the store handing out shiny Giratinas.
To earn your new shiny Palkia, you must show up at a GameStop location with either a Nintendo 3DS or DS, and a copy of Pokémon Black, White, Black 2 orWhite 2. GameStop reminds players to ensure that their game has fewer than 11 Wonder Cards collected, as the Palkia transfer will require at least one free Wonder Card slot.