Following the Shiny Rayquaza giveaway earlier this week in Australia, those of you in North America can now get your hands on the same Shiny Rayquaza in Pokémon Omega Ruby and Alpha Sapphire. [Thanks, Serebii.net.]
The Shiny Rayquaza can be yours by simply picking the “Mystery Gift” option at the main menu of Pokémon Omega Ruby or Alpha Sapphire, then select “Receive Gift” then “Get via Internet.” Once you do, you’ll get yourself a shiny new Shiny Rayquaza, which you can get from the delivery girl at the nearest Pokémon Center.
Your new Shiny Rayquaza will also have “Dragon Ascent,” a move that lets it Mega Evolve. Currently no end date is known for obtaining the Shiny Rayquaza.