Heracronite

Effect

Held: Allows Heracross to Mega Evolve into Mega Heracross.

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

X Y

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

Sun Moon / Ultra Sun Ultra Moon / Lets Go Pikachu Lets Go Eevee / Sword Shield