Catch a Shiny Gengar for Pokémon X and Pokémon Y at GameStop
A free DLC distribution for Pokémon X and Pokémon Y has launched at GameStop locations.
From now until October 26th, players can obtain a code card redeemable for a shiny Gengar. It comes complete holding a Gengarite Mega Stone, so you can immediately mega evolve it into a formidable shiny Mega Gengar.
Have a look at the beast in the trailer below.