you have to get the arceus event on mystery gift.
You can't.
definitely a Nintendo event
You can't
you can't
the only way you can obtain arceus without an action replay is to participate in a Pokemon event. arceus was given out on a movie event. you can also trade with others online on the global terminal or trading friend codes with someone who does have arceus.
You would have to go to a Nintendo event to get a certain item.
Wait for the Nintendo Event. It has not happened as of December 2008.
you need action replay.
no you cannot catch arceus in pokemon black without action replay
NO, you need action replay for it . the azure flute is for arceus.
There was a special mystery gift that gave you the flute and you go into the place you found dialga.