You need to get the azure Flute (event) and go to spear pillar. steps will appear and take you to arceus
arceus is an event pokemon.
Pokemon Diamond, Pearl, and Platinum have Arceus.
You can only get Arceus by an Event.
me
You can't catch Arceus. You can only catch Arceus in Pokemon Platinum.
Arceus.
Arceus
you can not get arceus with no action replay
you see him at spear pillar where you catch palkia and dialga or arceus
depends
the flute
arceus