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Key Stone
A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve.
Game descriptions
- Sun, Moon, Ultra Sun, Ultra Moon:A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve.
- L.G. Pikachu, L.G. Eevee:A stone filled with an unexplained power. It reacts to Mega Stones and makes Pokémon Mega Evolve.
- Sword, Shield, B.Diamond, S.Pearl:A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve.
- Scarlet, Violet:A stone filled with an unexplained power. It makes Pokémon that battle with a Mega Stone Mega Evolve.