There are 2 ways that you can catch it.First,you need action replay.Second,there is a arceas event but passed
no
hall of oragin
no p.s i know this because i beat the whole game and i did not have a mission to catch arceaus
no you cant you will need a action replay to hack the flute otherwise you cannot get it
you have to get the azure flute and go were you got palka/dialga depending which game
Ditto will hep you,just throw that game away and buy pokemon black.
look in every town poke mart and then thalke to the green guy in 1 of them he will give you the azure flute then go to the to of mt coronet blow in the pipe and u find arceas up the stairway just you
i used my modifire cheat to get arceas made by legen
Originaly all legendaries do when you fight them... but Arceas...probably..
this site dosent know arceas is in soulsilver
Dialga, Uxie, Mesprit, Azelf, and probly Arceas.
Yes I did It its awesome, Its name is arceus not arceas.