You simply trade it.
Firered, Leafgreen, Ruby, Sapphire and Emerald
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.
no, only from firered,leafgreen,ruby,sapphire and emerald
Access to the Pal Park Pokemon Ruby, Firered, Leafgreen, Sapphire Or Emerald
That would be FireRed/LeafGreen/Ruby/Sapphire/Emerald.
Migrate it from LeafGreen, FireRed, Ruby, Sapphire, or Emerald
you need to migrate from emerald or firered/leafgreen where you can get him from birth island
you have to migrate it from ruby sapphire or emerald or leafgreen or firered
You can migrate only if you got like Pokemon Sapphire,Emerald,Firered,Ruby,and Leafgreen.
No,but you can migrate your legends from firered leafgreen emerald ruby or sapphire
you can get one from firered or leaf green and transfering it to emerald,ruby, or sapphire, then migrate to diamond and pearl