You migrate and go to pal park
YUP
To get deoxys you have to migrate for emerald or trade.
no. itcould trade with emerald. soul silver and heart gold could trade
you have to trade him from soul silver or migrate him from Sapphire ruby or emerald.
trade them from Ruby, Emerald, or Sapphire, or... trade them from a friend, or... get them from the GTS.
Transfer it from emerald OR trade it from soul silver or heart gold
You have to trade Kyogre from Pokemon Sapphire, and you must trade Rayquaza from Pokemon Emerald.
Entei is only attainable in gold, silver, heart gold, and soul silver versions. If you wish to own one in emerald, your only options are to either use a game shark, or trade Entei over from gold, silver, heart gold, or soul silver versions. Not true you can capture entei in firered or leafgreen and Pokemon colosseum trade one from those games to emerald.
You can't, you must trade from Emerald (which had an event to get to Mew), or trade from Pokemon Ranch (if you unlocked it).
The only way to obtain a Wailord is to trade it from Ruby, Sapphire, and Emerald.
go to the union room and trade
no you can not...but you can trade heart gold and soul silver Pokemon to diamond pearl and platinum