Action replay
You must get arceaus flute to catch it.
No
no you have to get is from an action replay or go to a Pokemon event
Not Possable
It is Impossible without an action replay
You can't without an action replay.
Missingno is not avalible in Pokemon Diamond without help of the Action Replay.
In Diamond & Pearl? Impossible without migrating, trading, or Action Replaying.
you trade it or use action replay
Pokemon modefier from action replay.
not without an action replay and a Pokemon modifier code.