I think just receive via internet. In the main menu
Some through internet some yeah, through gamestop which is not available malaysia. But if they distribute using codes, there might be some on the internet. Prepare your shinies, items or other legend and trade with them.

Eleven Pokemon Event giveaway 2016 (Worldwide)
Source: IGN Event Pokemon 2016

Mew
February 1, 2016 - February 24, 2016

Celebi
March 1, 2016 - March 24, 2016

Jirachi
April 1, 2016 - April 24, 2016

Darkrai
May 1, 2016 - May 24, 2016

Manaphy
June 1, 2016 - June 24, 2016

Shaymin
July 1, 2016 - July 24, 2016

Arceus
August 1, 2016 - August 24, 2016

Victini
September 1, 2016 - September 24, 2016

Keldeo
October 1, 2016 - October 24, 2016

Genesect
November 1, 2016 - November 24, 2016

Meloetta
December 1, 2016 - December 24, 2016

I believe can redeem those - they are Worldwide giveaway

Turns out Maxsoft will distribute the legendary Pokemon for Pokemon 20th anniversary.

If Maxsoft is a woman I would kiss her