in order to get arceus you need to have an action replay ds. then you need to type in this code on you action replay.
arceus event
94000130 fcff0000
b21c4d28 00000000
b0000004 00000000
0000aa3c edb88320
2000aa68 0000000a
d2000000 00000000
after you did all that add it start game when playing press [L+R] then go to a Pokemon mart talk to the guy in green and he will give you the azure Flute then go to spear pilliar and the azure flute will start playing blow in to it stairs will show up go up them and battle arceus
get an arcius fult then go to where you foun palkia/dialga the use the flute arcius will then be there
Rhetus arcius was created in 1763.
U go to the trickmaster and defeat him then he'll give u Arcius
Just catch all the Pokemon first then arcius will come out so you needed to go around to find him
first of all it's arcius and you'll need the azure flute.play it at the spear pillar and some staircase comes.go up the staircase and arcius is there.
by a Nintendo event
Through an event, cheats, or trading
Its either lugia or dialga. no way its arcius
You eat all the magic burritos and say pie.
You either get it by an EVENT or you can TRADE or get an ACTION REPLAY.
315 Pokemon including arcius i am awsome
u cant u have to use a r.