None. you don't need any plates, but you do need an item called Azure Flute. play it where you caught Dialgia or Palkia. bring at least one lv. 100 Pokemon with you. does not matter what type. he is lv. 70, and is tough. bring lots of timer balls. i recommend using a Action Replay to get the flute. Good luck catching Arceus!
Note that there is no Normal-type Plate, so don't ask.
actually if u dunt give a plate to arceus. it is considered as normal type. so ha! <3
You can't catch arceus in pokemon white.
you can find arceus in the hoenn region.
its not a person, it's arceus, and even though arceus was a stupid idea, they made it. they should have stuck with the original 151 Pokemon anyway. Anyways, arceus can be found after obtaining all the plates, going to spear pillar, and using the azure flute, you may find arceus.
you use them to get arceus whitch is a very rare Pokemon but you also need certain pokemmon my friend mikey is trying to do that
Arceus is not possible to find in Pokemon Ruby. It was released in 2007 with Pokemon Diamond and Pearl
None. You find the artifacts for money to sell to the maniac in Undella City. YOu can also find 14 of the plates in here to use for arceus.
Find all plates and got to spear pillar................. TRICKED YOU....you need the Azure flute or action replay.
The new pokemon, Arceus. Go to pokemon.com to find out more about arceus.
Where ever you find normal Arceus. :p
In this generation of pokemon arceus doesn't exsist yet. So sorry but you can't find it in leaf green or fire red. arceus is in the next generation A.K.A. pokemon platinum /peril/diamond.
You can not FIND arceus in a city. You must find it through the evnt for Pearl Daimond or Platinum.
Arceus is a special event pokemon. The only way to get it is to get it at a special event or to hack the game.