you catch unowns just to fill out your unown notes.
nothing happens when you catch all 28 of them including ! and ?
You can't catch it, but you can trade for one from Pokemon Diamond, Pearl, or Platinum.
Get all the unowns thenf go to Mt silver you will see arcieus lv 80.
u catch unowns in the Solaceon ruins
Arcues is a event Pokemon but it is in the hall of orgin only obtainable by having a havens pipe.
you have to get it from Pokemon platinum or diamond
You can't catch bastiodon in Pokemon soulsilver.
you get celibi
catch it? no.
In caves near Solaceon Town to the right
When you complete all the puzzles in the ruins of alph a guy will give you the unown report, when you catch all the unowns go to the house in the ruins of alph and give it to him, he will let you battle arceus LV.70.
You cannot catch Heatran in Pokémon SoulSilver, you will have to trade for it.
No, you can not catch Phanpy in SoulSilver. It is a version exclusive to HeartGold.