My Pokemon Y doesn't let me get the mega evolution stones??

Question

I already beat the elite four and champion but my rival doesn't appear in kiloude city and professor sycamore is not in anistar city someone please help me :(

Answer 1

You have to do some battles in the Battle Maison and then your rival will show up.

Comments

This question is going to be dumb but where is the battle maison

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it's in the town that you have to take the train to get to after you beat the elite four

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Kiloude City.