you should use it on a very hard legendary Pokemon like dialga palkia giratina shaymin or arceus
When you come to meet Palkia or Dialga at MT.Corenet
you should use your master ball on anything that's rare (not like a shiny) you could use it on lugia, or you could just use hypnosis or somethin then use some ultra balls. if u have the arceus from the movie, do the event and use the master ball on either dialga, palkia, or giratina ( depends on what you choose)
Its always too hard to catch. But you can use a Master Ball right away or a Quick Ball. Occasionally, if its weakened, you can throw a lucky Poke ball at it. That's how I got my Dialga!
Use Kygore in the cave of origins you don't even have to attack! Walk up to him the orb should be glowing and then the battle, use the master ball and done! 1 Kygore! But there's one on master ball in the entire game! So use it here.
I'd use a master ball if you have one or a dusk/dawn or something ball.
soon enough youll venture through a dark cave and at the end there is dialga you will have a master ball by then use the master ball to catch dialga
Either weakening its HP or using a Master ball, but i recommend you use a master ball.
You can use it on giratina, but, you can catch him with adusk ball.... so probably on dialga or palkia u shouldn't use ur master ball on dialga and palkia because they got a catch rate of a chatot
you should use it on a very hard legendary Pokemon like dialga palkia giratina shaymin or arceus
Go and use it on a legendary Pokemon like dialga or arceus
When you come to meet Palkia or Dialga at MT.Corenet
Well I caught my dialga with a timer ball so I still had a master ball left to catch girtina so use a quick ball dusk ball or timer ball
you cant, you will need a master ball. I wasted mine catching Dialga yes u can use a heal ball i did it b4 im proved by pkmn master
When you get far enough in the game you will get a master ball, dont use it than even further in the game, there he is, that is when you use your master ball, cant miss, hope this help, but if you are to beat this game, you must fight dialga, hope this helped
When you catch up to Cryus (the leader of team Galactic) at the Spear pillar. After that make sure dialga's life is at the yellow or red zone the use a dusk or ultra ball , if that doesn't work use your master ball, while you are catching dialga in the master, ultra or dusk ball press a , b , b, b than after while the master , dusk or ultra ball shakes left press y.
Arceus,Giratina,Dialga,Palkia,Heatran,and Mewtwo