well, same way as any other pokémon. Get it's HP down really low ( I would recomend 1 HP ) and throw a ball at it. If it's in a cave, go dark ball. If outside, Ultra ball. you will have to use a lot of them, though.
there is no more masterballs in Pokemon platinum but not if you use cheats
Use alot of Ultra balls and status moves
well i do not now that
cheats
Pokemon lotery and action replay
1 master ball and a WHOLE LOTTA ultra balls AND dusk balls!
no the master ball works strait away without doing anything to the Pokemon
in every pokemon game you get one master ball before the leauge
Of course, a Master Ball catches any Pokemon without fail, Legendary or not.
Defeat Team Galactic Boss Cyrus, and he gives u a master ball. then he will tell you where the Legendary Pokemon are. Follow his direction...and use your wise to use masterball
You can't.
You have to be in distortion world and battle Cyrus. The Pokemon that Cyrus sends out are all weak against rock type moves. He has a sneasel a crobat and a hounchkrow. Defeat him and he will give you a master ball. Follow him and he will tell you where the legendary Pokemon are
you can not get a master ball in Pokemon platinum only the one professor Rowan gives you
Use the Master Ball if you need to catch a Pokemon without fail. I'd suggest using it on a legendary, though - don't waste it on a common Pokemon.
You get their health really low and use a ultra ball the best
you can use your master ball
master ball