Like many other Pokémon games games, The Band of Thieves & 1000 Pokémon includes some downloadable events that give you special access to features within the game. This page is to detail all of these events

Master Ball
Release Dates:

Japan: July 19th 2014 to September 30th 2014

Use:
The first Downloadable Event in this game requires you to go to the cinema to watch the movie Diancie & The Cocoon of Destruction. This allows for you to download a special mission that has you face off against Millis and her Chesnaught. When completed, you'll get a serial code for Pokémon X & Y to give you a Master Ball