At Jubilife TV Station. If the lotto number matches one of your Pokemons' ID number, which is highly improbable, you get one Master ball.
Hacking
Pokemon lotery and action replay
2
No, in all Pokémon games there is only one Master Ball avaible.
You can't.
No! That's obviously a no!
cheats
Yes there is a code for 999 master balls in Pokemon platinum
you can not get a master ball in Pokemon platinum only the one professor Rowan gives you
Go to your house and talk to your mum and ask in the microphone can i have master balls. don't listen
Action replay
Find them or u get a action replay