Trade.
You can't catch Arceus without cheats.. You can get it when an event is going on about Arceus..
You can only get arceus without cheats if you go to an event.
You can't.
YOU CANT
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
You have to attend a official Nintendo event. For now Arceus has been released only in Japan.
Distribution Event
No
you have to get the arceus event on mystery gift.
Currently No. Arceus was released by event in 2009 and is not intended to be released again.
That's the only way to get it