You have to pre-order the game, than get it through Mystery Gift.
You don't have to pre-order it. I bought it without one and still got it.
I got it by mystery gift online, and it says in order to evolve it the a new form it has to be between 5:00 to 5:59 P.M. in your in game.
Got mine. Don't forget that you can also get a Master Ball
With the Mystery Gift on the menu on the game, and you use with Internet.
I got mine! From the Internet option.
I got mines. Via Internet.
Yep, I got him.