Check out the Pokemon site http://www.Pokemon.com and click on Pokemon platinum
and click on Pokemon then click on the word rotom then it will explain how to get it
BEWARE the event ends July 19 2009
Pokemon Platnum comes out on March 22, 2009 in the U.S.A.
You can only get the secret key in Pokemon Platinum
get the secret potion from cythia at valor lakefront after you beat the pastoria city gym battle and defeated the grunt
the secret key is in the Pokemon mansion - Celadon city basement
Yes.
The Hall Of Origin
with an action replay
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you need to get a azureflute
TURTWIG
migrate from emerald
The Secret Key that you get in the Pokemon Mansion is used to enter the Cinnabar Gym.