you need the azure Flute.
to get the azure flute on diamond and pearl get a 50 or over win streak at the battle tower and go to the pokemart there is a guy next to the till talk to him he gives you azure flute go to top of spear pillar
You can send it from Pokemon Diamond Pearl or Platinum after obtaining it form an event, or use a cheat code.
Sorry,but you have to have an Action Replay (Cheat code card) or have gone to the toy r us event
You catch an Arceus with an event/ cheat code and make him hold it. The different plated changes his type.
The cheat code is 69056472444432
Arceus has no cheat code for Leaf Green, because Leaf Green was released years before Platinum, Pearl and Diamond in which Arceus first appears.
You have to use cheat code.
In Pokemon Pearl, you need the Azure Flute to get Arceus. First, you need to get the Azure Flute from an event/cheat code, then you need to go to Spear Pillar. Then, after playing the flute, a flight of stairs should appear, allowing you to fight/catch Arceus. Just be careful, Arceus is at level 80.
Because that's what it is used for
I am pretty sure but I forgot where
arceus if you have an action replay code go have the azure flute then play it then there will be an stair climb it and talk to arceus
action replay.use Pokemon modifier cheat code
It doesn't exist