I have four questions 1. Where do I find a metal coat for my onix?

I don't have the answer for all you're questions but I have for 2

3:A legendery Pokemon like palkia or whatever
4:it is possible to get more masterballs but you have to use AR's or Gamesharks codes for it

To get more masterballs you need to have action replay and use the cheat masterball x999. Its only 20.00 at walmart in the heatherdowns area. U should save your masterball. U need to walk 1000 or so steps and it will hatch. i dont know where u get metal coat.

1. Once you get further in the game go to Canalave City talk to the sailor who takes you to Iron Island, once you're at Iron Island go to the house above the stairs and the 6th gym leader will be there. Talk to him and he will give it to you.

2. My favorite way to hatch eggs is to go to Floaroma Town Ride your bike until it hatches

3. My suggestion is Mesprit or Cresselia because they can be really annoying to catch. Because they run.

4. Not that I now of

Answers:
1. I don't know. . .but you could just catch a steelix at Victory Road.

2. by walking a certain # of steps

3. it depends. . .but you should use it on a legendary pokemon. . . Like arceus

4. yes, at the lottery at jubilife TV. It's so hard to get one though, well, good luck!