To celebrate the fact that Pokémon Bank has been updated for Pokémon Sun and Pokémon Moon, the Pokémon Company is giving out Mew’s Z-Crystal, Mewnium Z, to all Pokémon Bank users. When given to a Mew, this Z-Crystal will unlock its ability to use the Z-Move Genesis Supernova.
Here’s a look at the official post from Pokémon’s Twitter.
— Pokémon (@Pokemon) January 25, 2017
Pokémon Sun and Pokémon Moon are available for Nintendo 3DS.