Unless you have a Master Ball to spare, Dusk Balls would work best. Timer Balls will work just as well as Dusk Balls if the fight has gone for more than 30 turns.
to catch mesprit in pokemon platinum go to its cave(after beating team galatic and catching/defeating girantina)at lake verity use surf and swim to the cave in the middle. talk to mesprit and it will run away and oak will tell you after it and use your marking map to track it down. best strategy to catch it is get a pokemon with a move like mean look or make it go to sleep. also mesprit is level 50 like uxie and azelf
buy 5 ultra balls 5 timer balls and 5 dusk balls. cresselia is at the top the mountian. GOOD LUCK!
the best way is to bring it down to the red mark a bring about 10-15 revives, 20 max potions, 25 quick balls, 19 dark balls, 15 ultra balls, 15 great balls, but you can use a masterball on it
the best way to catch a registeel would be to use fire types then use lots of dusk balls asuming its in a cave and bring lots of spare timer balls if it takes too long.
Master LOL really , i recommend quick balls, then ultra,then timer.
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.
ALOTof ultra balls
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.
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 keep trying the best you can and try everything including: Master balls, pokeballs, etc
Get his/her health into the red zone, and paralyse/put it to sleep. Then toss Ultra balls, Time balls and Dusk balls.it takes ages but keep on throwing dusk and ultra balls . soo get lots of them first .ANSWER: For uxie and azelf use dusk and ultra balls when there HP is red and they are either sleeping paralyzed poisoned or frozen and for mespirt use ultra balls and some quick balls at the start and timer balls after about 20 turns. Also shout 'gotcha' into the mic and continuously press B to have a better chance of catching them!
to get Azelf in Platinum, all you have to do is go to lake valor lakefront, then surf to the middle of the lake,and there should be an island in the middle.I think that the best poke balls you should use are timer balls or dusk balls.you should also try to use a Pokemon at around level 50 that knows hypnosis.
spear pillar they have a catch rate of 30 so its easy to catch ultra balls and dusk balls are the best
You can catch more legendary pokemons on platinum. So you can catch more on Platinum, then the other games :)
in etrena forest
Throw a masterball at it.
There is no such thing in Platinum unless you cheat- action replay is best among cheat programs