The Shadow Ball TM can be found in the northern half Route 210 by Celestic Town. There will be a stilt that you have to ride your bike on. Then you have to fight a ninja boy. After that you should see a Pokeball that should have the TM Shadow Ball in it.
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The Shadow Ball TM can be found in the northern half Route 210 by Celestic Town. There will be a stilt that you have to ride your bike on. Then you have to fight a ninja boy. After that you should see a Pokeball that should have the TM Shadow Ball in it.
Route 201
or
battle frontier shop
The Action replay is your friend.
You could always buy it.