"One of a variety of mysterious Mega Stones. Have Steelix hold it, and this stone will enable it to Mega Evolve during battle."
Effect
Held: Allows Steelix to Mega Evolve into Mega Steelix.
Availability
Category
Mega Stones
Cost
Cannot be bought.
Game Availability
Ultra Sun Ultra MoonSun MoonLets Go Pikachu Lets Go EeveeSword Shield