you would have to go to the event site. some Pokemon events would be held in toys r us or at GameStop. then you would go to the section that is named Mystery gift. after that, click look for a mystery gift via wireless. then wait and you will receive your gift.
this will only work on Pokemon diamond, pearl and platinum.
There no pokemon event
go to an event
there will be a next event on pokemon black and white
as long as the event is still going on, there is a way. it involves getting the same "event gift" in Pokemon diamond/pearl and trading to Pokemon platinum.
there is a Nintendo event maybe at gamestop and go to it with Pokemon heartgold and soulsilver and there you will get celibi
Arceus is a event Pokemon so get it from a event thing.
u had to be in the special Pokemon event
deoxys is an event pokemon. that event passed forever ago
meloda is an event pokemon, the date of the event is unknown
action replay
Unless you cheat, or trade you cannot get the event Pokemon as they expired ages ago.
Pokemon event.