You are not able to. There is only one way, but that is only for emerald, gold and silver editions.
you can not clone in this gameyou can only clone in emerald version.No.You can, It's called birth. On 4 island, there is a daycare center. Put the Pokemon you want to "clone" with the same Pokemon of the opposite gender or a Ditto to "clone" it.
Level them up
www.gameshark.com
Use a game shark or an ar, cause there is curently no way to aquire Arceus without cheats.
Link with somebody that has it.
You have to upload it from FireRed, LeafGreen, Ruby, Sapphire, or Emerald.
shiny Pokemon game shark code for Pokemon fire red
No unless you have a game shark
having good luck
use a code
Must trade them from another leafgreen or firered sorry.
You need a game shark