If you missed out on grabbing certain Mega Stones for your Pokémon game back in May, you get a new chance now. This time it takes less effort to obtain the Tyranitarite, Abomasite, Manectite and Aggronite. Instead of battling for them all you need to do is enter a code.
After starting up your game, select Mystery Gift and enter SABLEVOLANT for your free stones. Then, visit any Pokémon Center and talk to the deliveryman to add them in your inventory. You will be able to tap into the power of your Pokémon when using a Mega Evolution. Have them ready for online battles against tough opponents.
You will not be able to find Tyranitar, Abomasnow, Manectric or Aggron in the wild lands of Alola. Transport them via Pokémon Bank instead in order to use their Mega Stones.