To help promote the release of the upcoming game Pokémon + Nobunaga's Ambition (ポケモン＋ノブナガの野望) which will be released in Japan on March 17th, 2012, Nobunaga's Dark Rayquaza (ノブナガの黒いレックウザ) will be distributed on the Nintendo Wi-Fi Connection to players of the Japanese versions of Pokémon Black and White (ポケットモンスター ブラック・ホワイト). The Rayquaza will be distributed from March 17th, 2012 until April 16th, 2012. This Rayquaza will also be distributed at all the Japanese Pokémon Centers and at Pokémon BW Searcher (ポケモンサーチャーBW) tour locations.


The details of Nobunaga's Dark Rayquaza are as follows:

Pokémon	Info
	Level: 70
	OT: ノブナガ (Nobunaga)
	Poké ball: Cherish Ball
	Ribbon: Classic Ribbon
	Ability: Air Lock
	Held Item: None
	Attack 1: Dragon Pulse
	Attack 2: AncientPower
	Attack 3: Outrage
	Attack 4: Dragon Dance

Sources: http://www.pokemon.co.jp/info/2012/03/120302_g01.html, http://www.pokemon.co.jp/info/2012/02/120224_e01.html and http://game.watch.impress.co.jp/docs/news/20120302_516159.html

I really like this shiny Rayquaza... I really hope there'll be a similar operation if the game comes out in the US/EU!