How could i catch deoxsis in emerald? because i really dont know or can't (need an aroa ticket also)
Please see Google search for more details on Deoxys in Emerald.
you need the ticket, but u can only get it from another game, I think pokemon colloseum, after you get the ticket youll go on a island with a strange tree and there will be deoxis
Deoxys is an infectious disease? LMAO!