In Pokemon marts if you have the action replay or what ever it is for game boy
you have to clone that Pokemon holding a master ball
1
You don't.
one
Master Code: D8BAE4D9 4864DCE5 Buy Master Balls Code: 82005274 0001
You can't have unlimited master balls although u can give the master ball to a Pokemon and duplicate it at battle frontier
Clone your Pokemon and give them the master ball
kaleb's cheating device.
Make a Pokemon hold the master ball then clone that Pokemon.
Win the lotto 492 times.
there is only one and its in the team aqua hideout
You need to transfer from Emerald the mb. You give (Emerald) the Pokemon you are going to clone the master ball (hope you have 1) and then do the battle tower glitch and voila! Here are your master balls. You can use this as many times as you like!