You can not. There is no possible way of getting a Deoxy's in Pokemon Soul Silver.
To get deoxys you have to migrate for emerald or trade.
you cant get deoxys in soul silver sorry
Deoxys is not a wild Pokemon in SoulSilver. Deoxys has to be traded into the game in order for you to get it. Deoxys can also be received by event, and one recently took place in Japan for Deoxys.
You cannot find a wild Deoxys in in Pokemon Soul Silver, or HeartGold. Deoxys can only be obtained by trading with someone or by getting one at special distributions.
You can't catch Deoxys in soul silver
You have to have a cheating device like a game shark, or action replay to be able to obtain Deoxys in Soul Silver
Deoxys is only obtainable in Nintendo Events. The most recent one in the US was the Game Stop Deoxys event.
Sadly, there is no way to get Doexys in Pokemon SoulSilver besides trading.
You have to trade a Deoxys from another Pokemon game to get it on your copy of SoulSilver.
386
no you cant =( but you can get it from another game
pickle