Part of the ongoing appeal of Pokémon X & Y is the wealth of online features that give it life beyond the core single player experience. While battling is an option, of course, the Global Trade Station also allows players to exchange 'mon with each other. It's certainly popular, and with a major landmark approaching The Pokémon Company has announced a special distribution that'll arrive in the future.
At present around 90 million trades have taken place using the service, and it's been announced that once the 100 million mark is reached a Fancy Pattern Vivillon will be distributed to owners of the latest titles on 3DS.
Vivillon is a unique Pokémon in that the patterns and colours on its wings typically vary based on the real-world region in which a player lives. Because of this characteristic, players around the world have been exchanging Vivillon via the GTS to collect all of the regional patterns.
This newly discovered Vivillon breaks with that tradition: it will become available to Pokémon fans across the globe once the 100 millionth Pokémon is traded via the GTS. When this enormous milestone is reached, a special distribution event will take place, enabling all players of Pokémon X or Pokémon Y to receive the Fancy Pattern Vivillon wherever they are in the world!
You can see images of the Fancy Pattern Vivillon above and below; if you want it soon you'd better get trading.