Stark moutain
you get tickets in the battle frontier quest (why are you still playing pokemon you should be playing call of duty)
if you are cloning at the battle frontier you better follow the correct steps.Try this website http://pokewiids.wordpress.com/2006/08/03/emerald-cloning-glitch/ But you should not lose your original pokemon.
Same as flygon
it should be able to. Doesn't learn it naturally, but you can teach it if you have the TM or go to the battle frontier and you can pay BP to the old lady to have them teach it that move...(battle frontier is available in Pokemon emerald only though)
Go to the battle frontier(after beating elite four) and next to the battle palace there should be an odd dancing tree.Then use a wailmer pail on it and it will go into battle with you.
there isn't really a best team i find a team with well balanced types i know the best team to use on the Pokemon league is just a blazeiken and a salamence so that might work on the battle frontier aswel and with that a good water Pokemon and that should work
The thing you really want to do the most is challenge the Battle Frontier. Another goal you should aim for is catching all the Pokemon you can, and raising your team to Lvl 100.
Flamethrower Rock Slide Earthquake Body Slam
you should have level 100 Pokemon or else you will probaly fail miserlabley
simple,in each tower like battle pike in battle frontier the leaders are hard sometimes all their Pokemon are the level the highest level Pokemon u brought to the area.they have leagendary Pokemon too.Brandon has regirock,registeel, regice,articuno,zapdos,and moltres.so u should battle Brandon last. also Brandon is at the battle piramid.
First you complete both options in the battle places ( e.g. battle dome/pike/arena/pyramid etc) like in the battle dome, there is level 50 and open level. first you do level 50 then open level, and then you should see the frontier brain, if not try any option again, and then hopefully you should be able to see/ battle them.
only one he asks you what level he should take in the challenge