a farting ball
Of course, the best pokeball to catch any pokemon is a master ball, but if you used it on dialga, you could put it asleep and then get its hp red and use an ultra ball
You can use any, but the best to use is the Master Ball (if you still have it), or Ultra Balls when it is extremely weakened.
The dusk ball has a higher catch rate in darker areas, like the cave Azelf is found in. It is also slightly cheaper than the ultra ball, which yeilds similar results. Of course, if you choose to use your Masterball, it will work without fail.
You need a reapet ball or a heal ball to cach Azelf.
Use your master ball.
Azelf is found in the Sinnoh Region, in one of the three caves in the middle of the three lakes. (Pokemon Diamond and Pearl). You can catch azelf after you catch the Pokemon Dialga or Palkia. It depends on the type of Pokemon game you have Pearl for Palkia and Diamond for Dialga.It would be best to catch Azelf with an Ultra ball. But if you havent used your master ball yet u can catch Azelf with that. Use Kricketune's false swipe, the use luxray's thunderwave to paralyze it. It took about 10 dusk balls.
well the most rarest pokemon i would say is unixe azelf and mespirt they suck i know but there the rarest in the game and dialga and girantina are rare to but not as rare as mespirt, azelf and unixe.
Azelf is in the cave at lake valor you just have to go in and a dusk ball or an ultra ball after weakening it and just capture it
I used a Master Ball to catch Palkia, but that was before I knew Uxie, Azelf, and Mesprit were legendary. It all depends on the types of the Pokemon or how long you expect the battle to last. For Water-type or Bug-type legendaries, use Net Balls. For long-lasting battles, use a Timer Ball. For cave or night battles, use a Dusk Ball. (I recommend this for the Generation IV legendary trio, Uxie, Azelf, and Mesprit.) For Water-types, use a Dive Ball. (I'm not sure where you get this.) An overall ball to use would be the Ultra Ball.
Very. Use it on Mespirit, Cresselia is very easy to catch. If you have Platinum you might want to use it on Articuno, Zapdos or Moltres.
you need action replay