One of a variety of mysterious Mega Stones. An Abomasnow holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Absol holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Aerodactyl holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Aggron holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Alakazam holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Altaria holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Ampharos holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Audino holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Banette holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Barbaracle holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Beedrill holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Blastoise holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Camerupt holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Chandelure holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Charizard holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Charizard holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Chesnaught holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Clefable holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Delphox holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Diancie holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Dragalge holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Dragonite holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Drampa holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Eelektross holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Emboar holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. An Excadrill holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Falinks holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Feraligatr holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A special Floette holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Froslass holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Gallade holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Garchomp holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Gardevoir holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Gengar holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Glalie holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Greninja holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Gyarados holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Hawlucha holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Heracross holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Houndoom holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Kangaskhan holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Lopunny holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Lucario holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Malamar holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Manectric holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Mawile holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Medicham holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Meganium holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Metagross holding this stone will be able to Mega Evolve during battle.

One of a variety of mysterious Mega Stones. A Mewtwo holding this stone will be able to Mega Evolve during battle.