You can get one in team aqua hideout (if you are in Pokemon emerald/sapphire)
Or in team Magma hideout (if you are playing Pokemon ruby)
It is near the two fake electrodes
You go to the Veilstone H.Q. in Veilstone City and go to Cyrus and defeat him and he will give you a master ball.
Master Ball 958D8046 A7151D70 8BB602F7 8CEB681A go into a mart and the only thing you can buy is master ball for $0
go on pokemon.com it will help u
go to jubilife and a lottery will be in a building. if first place they will give you a master ball
After you beat Lance, go back to professor Elm and talk to him. Then, he'll give you the master ball! (You can go to pokemon.marriland.com.)
After you get all 8 Johto gym badges go to pr. elm and he will give you a master ball
No, you cant get a master ball when you are in there! To get a master ball you fly to Lilycove and go to the big building, the talk to the lady on the counter, if your lucky and you have the number that she has, you get a master ball. You can only do it once a day its kinda frusrating when you dont get one!
after you beat the elite four you go to prof. elm and he gives you a master ball and the s.s. aqua ticket.
you need to beat the eighth gym leader and then go to prof.elm lab and he will give you the master ball
the way to get darkri is get $999999 money like dat then go to a pokemart buy a master ball from there at the Pokemon luag and go to the docks and reals the master ball the master ball it $999999 reales you starter Pokemon and thro away the master ball and go to the inn and there you go! [I HAVE DONE THEIS BEFOR SO IT WORKS] SORRY FOR MY TYPING I SUCK :D THANK YOU AND COME AGAIN
Go to the aqua or magma hide out.
For Zapdos: Go through the power plant and use your master ball, If Master ball has been used then attempt to capture with Great ball or Ultra ball. For Moltres: Go to Mt. Ember and climb to the summit and Moltres will be waiting. Use your Master ball, If used try to capture with Great ball or Ultra ball. For Articuno: Go to the Sea foam caves and move the boulders through the empty holes ( Strenght HM Is needed ) Articuno is tricky to catch. Use your Master ball, If used try to capture with Great ball or Ultra ball.