Perferably your Heavy Balls or your Ultra Balls. Possibly even Level Balls or Dusk Balls.
There are many types of PokeBalls you could use to catch Azelf.But I would suggest the following: Quick Balls Master Balls Poke Balls Dusk Balls and,Ultra Balls
you can only get timer balls on rustboro city pokemart on emerald
You Can't
Purple.
find a nice dark alley or someplace that someone will not be watching you and scrach away
What three minerals are metal and scrach glass
Batch,catch,latch
toothpaste
No.
hairy testicles
scrach it
to scrach their back
Another diamond can scratch a diamond.
kick them in the balls
they have it because its awsome XD
only when you touch them