if you use an action replay.
After defeating him in the galactic HQ after the seventh gym, Cyrus will give you a master ball. Do not use your master ball on dialga! Instead, use it on Cresselia or another harder Pokemon to catch.
The only way to get another master ball in Pokemon dimond whithout cheating is by giving a Pokemon a master ball as an item in another game and trading that Pokemon to your Pokemon dimond game and take the master ball then you can use it. Or you can get an action replay at www.amizon.com for $20.00 and find the master ball cheat for it then you can get lots of master balls all the time it realy works try it.
a master ball. you only get one. someone gives it to you (i think the galactic boss guy, but that might have just been in platinum)
i recommend using a master ball or a Heall Ball Hoped I helped!!
look in all the bin's on the first three city's and there's 99 master ball's in one I think.
there is no master ball in diamond and also great ball. but there is silver ball-silver ball is like a master ball.
A Poké Ball can't be changed into a Master Ball.
if you beat the boss of team galactic, you will get a master ball from him
you get a master ball from proffeser rowen to catch Dialga
You can't have unlimited master balls although u can give the master ball to a Pokemon and duplicate it at battle frontier
Have a friend trade you a Pokemon holding the master ball they got.
action replay is best
action replay code to get unlimited every-poke-ball in Pokemon diamond?Read more: What_is_the_action_replay_code_to_get_unlimited_every-poke-ball_in_Pokemon_diamond
A player can obtain the Master Ball after you defeat Cyrus in the Veilstone Plasma Base.
get an action replay
acton replay is ony way SOS :-]
first you get amaster ball give the master ball to Pokemon copy that Pokemon over and over again then take the master balls from the Pokemon