First, you need to break into Team Galactics giant warehouse in Veilstone and once you finally make it up to the boss, he'll give you a masterball if you defeat him.
This may sound a bit odd, but you use the Pokemon modifier cheat and you get 493(represents national dex number) masterballs in the items.
When you beat Cyrus in the Galactic hide-out in Veilstone City, he gives you a master ball for some reason!
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.
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.
number 148 is Azelf, you get it at one of the three legendary lakes. Try to get it in a master ball. Hope I helped!- Ashlie
You can get one Master Ball in your GBA game and then migrate to Pokemon Pearl with a Pokemon holding the Master Ball.
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)
there is no master ball in diamond and also great ball. but there is silver ball-silver ball is like a master ball.
Have a friend trade you a Pokemon holding the master ball they got.
if you beat the boss of team galactic, you will get a master ball from him
A Poké Ball can't be changed into a Master Ball.
you get a master ball from proffeser rowen to catch Dialga
You cannot find a second master ball however you can trade Pokemon to get another Pokemon with a master ball or use an action replay
giratina
how to catch dailga in Pokemon diamond use the master ball
get an action replay
There is only one Master ball in Pokemon diamond so use it wisely. I hope you can find it!
Use it on Palkia.
you have to trade with a friend.