"One of a variety of mysterious Mega Stones. Have Mewtwo hold it, and this stone will enable it to Mega Evolve during battle."
Effect
Held: Allows Mewtwo to Mega Evolve into Mega Mewtwo X.
Availability
Category
Mega Stones
Cost
Cannot be bought.
Game Availability
Sword ShieldX YSun MoonUltra Sun Ultra MoonLets Go Pikachu Lets Go Eevee