Gengarite

Effect

Held: Allows Gengar to Mega Evolve into Mega Gengar.

One variety of the mysterious Mega Stones. Have Gengar hold it, and this stone will enable it to Mega Evolve during battle.

X Y

One of a variety of mysterious Mega Stones. Have Gengar hold it, and this stone will enable it to Mega Evolve during battle.

Sun Moon / Ultra Sun Ultra Moon / Sword Shield

One of a variety of mysterious Mega Stones. This stone will enable Gengar to Mega Evolve during battle.

Lets Go Pikachu Lets Go Eevee