January 24th 2013 - USA and EUR(English version) WIFI Mystery Gift Event:
128 - The Mythical Pokémon Keldeo! with Sacred Sword Move for Pokémon Black and White 2
"Once you have Keldeo in your party, complete an in-game event that will teach Keldeo its signature Secret Sword move and reveal a new form for the Pokémon!"
Some how the event started a day earlier than what was originally scheduled as per informed in Pokémon.com.
But I can assure you, the file I provided is genuine. Thus why I purposely used an emulator to do the WIFI download, so that I can do screenshots to proof the .pgf file in the above link is 100% genuine.
Proof in the spoiler for the download made on 24/1/2013:
Proof in the spoiler for the re-download made on 25/1/2013:
In this spoiler is the advertisement that I had cut, joined, and paste from Pokémon.com: