Anything tbh you can defeat the Pokemon league again or catch other rare Pokemon:)
You catch deoxys at birth island.
you have to get it in a event and you cant get it in Pokemon leafgreen or firered
Deoxys cause you can't get it.
You don't get a Shiny Deoxys from a man. You'll need to get Deoxys in Pokemon FireRed, LeafGreen, or Emerald. It is extremely hard to get a Shiny Deoxys.
You need to migrate it from FireRed, LeafGreen, or Emerald. But if you have a Deoxys in Pokemon Ruby or Sapphire, then you can migrate from them to Pal Park.
Go to birth island.
in a island with mistery gift
Pokemon Emerald: Birth Island Pokemon Sapphire: Trade from Pokemon FireRed, LeafGreen, or Emerald. Pokemon Ruby: Trade from Pokemon FireRed, LeafGreen, or Emerald.
yes, all Pokemon up to deoxys(#386) are in that.
You can only get Deoxys through a special event.
simply put: no deoxys is only obtainable in the Firered or Leafgreen but only with a certain ferry pass
Cheat to get the aurora ticket then go to birth island.