>>58242699I'd bet on a month, so no Chesnaughtite until Christmas. Even then, you'll need the appropriate online ranking to receive it.
We don't know what rank you would need to reach to get the mega stones as a reward, but when the Greninjaite starts getting given out at launch, we'll have a good idea. I'm hoping you can just reach a rank and put the game down to earn the rewards as they come out. If I have to keep playing online constantly against the cretinous slugs that comprises this fanbase to maintain my rank, I'll be pissed off.
