Do you want any of these three legendary pokemon in your current black/white or black2/white 2 game? Well, just head over to any game stop, select "mystery gift" and select "via wireless" to recieve all three! They go as follows
1) august 19th- September 8th is the shiny Dialga
2)September 9th-29th is a shiny palkia
3) and last but not least, September 30- October 20th is a shiny giratina!
Go out there and get some!