Nothing special happens.
you have to bring arceus to the unown house
It can dream of a pokemon(s) and then you go to the entree forest look all around and you might find one(I found Arceus!)
I heard that if you migrate an arceus to soul silver/ heart gold you can get like giritina, palkia, or dialga some how. that's all i know.The Way To Do That Is Go Into A House At The Ruins Of Alph And He Will Bring You Somewhere.
Bring an Arceus to the little research center.
u can only go once and u need the arzue flute wich u can only get with AR(dont know the code.) but if u bring an arceus nothing special, you'd battle arceus anyway.
you cant unless you have an action replay you need to get the azure flute then you use it at spear pillar then go up the stairs that appear then you will see arceus it is at level 70 or 80 so bring your strongest Pokemon
If you bring an Arceus to the research center, walking out, a guy will bring you to the underground area where you catch unown. You will be warped to a place with Cynthia. She will tell you to deposit every Pokemon e xcept Arceus. Then you will chose between Dialga, Palkia, and Giratina. Palkia is the best because there is occasionally a Shiny Pokemon asking for Palkia 9 and under on the GTS. The Pokemon you chose is Level 1.This will only work with Level 80 and up Arceus.
bring good Pokemon
Well, Jesus is actually the one and only Son of God. Thus, to not bring in any religious controversy into the Pokemon world, there is no Jesus because there is only One Jesus. However, on a hierarchy level, if Arceus is the god of the Pokemon, then the lesser power just below Arceus would Celebi, since Celebi brings life to all of the forests, just as Arceus brought life to all of the Pokemon.
If you did,just go to the pokemon league then beat the elite four and the champion
To beat the Pokemon league champion you have to bring strong Pokemon that her Pokemon are weak to. Cynthia starts with her spiritomb, which has no weakness so bring a dark or ghost type. She has a gastradon which is a grass and ground type so grass is perfect. Her milotic should have a problem with grass and electric types. Her lucario won't stand a chance to fire or fighting types. To demolish her garchomp bring an ice type. For her roserade bring either a flying or fire type. Now go and claim your title as the real Pokemon league champion.
i don't think anything happens.....