i here you go and beat the battle tower 10 times and he will apear.
you dont need codes for arceus!for more info ask "how do you get arceus by using ar"
YOU CANT
Distribution Event
there is no Arceus Omega.
You can't.
i dont think so
you ned to go to www.codejunkies.com
Arceus Can only be obtained in a Pokemon event or by using AR
Nintendo event or ar code
Sorry you cant, the events over, i missed it too.But you can get arceus from AR(action replay), wifi trading (if you've seen it) or future arceus events (unlikely but maybe)
add the arceus event code on your ar and talk to the green man he will give u the azure flute
if its in a cave use dusk balls and ultra balls or just go and get arceus by ar or action replay codes but u should have had saved that master ball for arceus