Our software update is now concluded. You will need to reset your password to log in. In order to do this, you will have to click "Log in" in the top right corner and then "Forgot your password?".
Welcome to PokéCommunity! Register now and join one of the best fan communities on the 'net to talk Pokémon and more! We are not affiliated with The Pokémon Company or Nintendo.
Maybe there will be a Diancie event for X/Y and then you trade the Diancie over to OR/AS and it unlocks a secret event, which would be where you get Diancie's mega stone.
If you look at the corocoro leaks we got, Mega Diancie was revealed with the batch of OR/AS news. Corocoro also revealed that Steven is after the secret Mega Evolution. Now in the upcoming movie Diancie is trying to awaken a "secret power", which is likely to be its mega evolution. This may be a...