*For Pokemon Omega Ruby, Alpha Sapphire, X, and Y only.
From now to December, each month features a different legendary that will be available for distribution (All at lv 100) at your local Gamestop or EBgames (Only confirmed for Mew so far and rest just says Nintendo Network), so Americans and Canadians only i guess(And maybe Australia as well?). Just go up to the counter and ask for a code. To redeem your Pokemon: Mystery Gift -> Receive Gift -> Get with code -> Enter code -> Talk to delivery girl at Pokemon Center.
Mew
Feb 1 - 24
Celebi
March 1 - 24
Jirachi
April 1 - 24
Darkrai
May 1 - 24
Manaphy
June 1 - 24
Shaymin
July 1 - 24
*Take it to Route 123 in Omega Ruby or Alpha Sapphire to obtain the Garcidea Flower for its Sky Forme
Arceus
August 1 - 24
*Code expires on November 30, only mentioned for Arceus
Victini
September 1 - 24
Keldeo
October 1 - 24
*Take it to the Mauville move tutor to teach it Secret Sword
Genesect
November 1 - 24
*Guy on the second floor of Mauville on the northeastern part of the city will give you the drives to change the typing of Techno Blast
Meloetta
December 1- 24
*Take it to Mauville Move tutor to teach it Relic song to change it to its Pirouette Forme.
Source: http://www.pokemon20...s/mythical.html
Edited by Honchkrow, 11 February 2016 - 03:10 PM.