There is no way, unless you got it in an event.
You cannot breed Legendary Pokemon without cheats, except for Manaphy with Ditto.
migrate phione from Pokemon ranger
Manaphy can only be obtained through events or trading. To obtain a Manaphy, one must attend a Nintendo promotional event or trade with a trainer who already has obtained Manaphy.
look up cheats to get manaphy
Get Pokemon emerald and then you can get all three without cheats or trading
To get event Pokemon without using cheats or events is simply impossible without trading. If trading is not an option you must attend these events or use a cheat device.
You can do it by trading any Pokemon you don't have from your friends
no you can't you have to either trade or gameshark cheats :P
Not without trading from another game or using cheats.
You can't without trading from other games or cheats.
cheats
you cant get every legendary of Pokemon without cheats or migrating and trading with people