you can't
You can't get Castform in SoulSliver without trading or migrating.
Growlithe is one of the "version-specific" Pokemon. Growlithe is only available in HeartGold, while in SoulSilver you can only get Vulpix.
Not without trading or cheating.
Cheat using an action replay
you cant
you can migrate him from emerald or sapphire.
In Diamond & Pearl? Impossible without migrating, trading, or Action Replaying.
you cant get every legendary of Pokemon without cheats or migrating and trading with people
u can't
You can't, you must trade or migrate, Sorry. :-(
the only way to get deoxys is: a)action replay/r4 b)migrating c)trading
You can't without trading, migrating or, cheats