YOU CANT
Distribution Event
You can't.
you have to unlock the mystery gift first to get the azure flute
Trade.
Nintendo event or ar code
Arceus Can only be obtained in a Pokemon event or by using AR
You can't catch Arceus without cheats.. You can get it when an event is going on about Arceus..
HE SAID WITHOUT AR! so first u need to go to toysrus when there is an event. download the gifts and use them at the spear pillar, route 224, and canalve citys lockked door.
You can only get arceus without cheats if you go to an event.
You have to wait for a Nintendo event to come to a nearby store. You can also connect online using the DS. A Nintendo event has not yet happened for Arceus in Platinum.
You can't.
Well you can go to the arceus event when the movie Arceus and the sky diamond comes out. that is a past event try a gllich