I recommend trading a Pokemon from another games holding a masterball. If you don't understand. USE THE TRADED MASTERBALL!
the way you catch azelf mesprit and uxie.
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.
azelf is at route 23
ALOTof ultra balls
You can't catch Azelf in Pokemon Heart Gold. Sorry! But you can catch it in Diamond, Pearl or Platinum. Hope this helps!
After you catch dialga you go to Valor Lake and use surf across it. Then you go in the cavern and azelf in inside it.
=no=
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 have to go to lake verity cavern and catch it.
catch a azelf and rome around
nope
In one of the three lakes.