after you beat battle tower just do Pokemon contests or catch legendaries other than that nothing else to do so buy ruby or emerald then trade and just keep doing that then get gamecube at GameStop for 30 dollars and get the Pokemon on gamecube and just do that .hope i helped
Nothing
beat 50 trainers in a row in the battle tower
Your game objective is to catch every Pokémon and defeat the Battle Tower.
you cant beat the battle tower
YOU JUST GET A ZINC OR CALCIUM OR SOMETHING. WHEN YOU BEAT 50 TRAINERS IN A ROW, YOU GET THE SILVER SHIELD AND WHEN YOU BEAT 100 TRAINERS IN A ROW, YOU GET THE GOLD SHIELD
Beat the Elite 4, after which construction on the ferry will be completed and you'll be able to go to the Battle Tower (Ruby and Sapphire)/Battle Frontier (Emerald).
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Well try to beat the battle tower cause its not like emerald its like ruby and Sapphire but when platinum comes its like emerald so beat the battle tower and ur done with the whole game.
After you beat the Pokemon league, you can train all your Pokemon, challenge the battle tower, do both, or start over.( i don't recommend starting over)
by blowing up the battle tower .
if you mean on the trainer card you need to beat the league complete the pokedex hatch an egg and complete battle tower
battle them