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it is the alpha Pokemon and it created the world
You have to get on the wifi event in platinum and trade it
where are special key in Pokemon diamond where are special key in Pokemon diamond
Pokemon event.
Wat
i f you dont have dimond perl or platnom you need to get the special arcaus via mystory gift or trade. this will make an event happen in witch you can get him.
Arceus is a event Pokemon so get it from a event thing.
Hackz or go to a Pokemon event
using a Pokemon event
Dialga
arceus or shiny pichu event
there is no event, if you want to make an event loook on the internet