on your D's turn the time on the date and day the mystery gift was on and make sure you also have a R4C Chip and then just the game then you'll see mystery gift but this will only work if you've used mystery gift before
you use the global trade system
Get a Deoxys in Pokemon Emerald, Ruby, Sapphire, Firered, or Leafgreen using the Mystery Gift, and migrate it to your Diamond Version.
No, you can't catch Deoxys on Pokemon Diamond & Pearl unless you have cheats. You can transfer it from your GBA to Pokemon Diamond and Pearl though
No
action replay
Migrate from emerrald
Not in the wild; you must trade it from FR/LG/E.You can obtain Deoxys in Pokemon Diamond by:CheatingTradingEvent
sadly you can't.
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.
every Pokemon up to deoxys
No you can't catch deoxys by using cheats
493 including mew deoxys arcues