December Pokemon Dolls
Special Sinnoh Pokemon
All three of these are current Pokemon Dream World Promotions
The Keldeo Resolution needs KELDEOCGEARBW2
AVDANGD is th code for the December Dolls.
For the Special sinnoh starters: Using a presumably unique code in specially marked copies of BW2 in Walmart, you can choose to get one of the three Sinnoh starters.
I have also got the Keldeo Resolute Skin. Which does not require any password.
I just found this new website which tells you ALL latest events.
December Pokedolls: AVDANGD
For the special sinnoh Pokemon: its not repeatable and you must go to walmart and buy a new B2/W2 game and the code will be in it.
and personal experience