Seafoam Islands Fourth Basement Floor in Pokémon Red Version, Pokémon Blue Version and Pokémon Yellow Version
Mist Stones were rumored evolution stones that could supposedly evolve every single Pokémon, including Pokémon in their last stage of evolution.
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Stones like the Thunder Stone, Fire Stone, Water Stone and Leaf Stone were used to evolve certain Pokémon. This led to speculation regarding whether there were other types of stones used to evolve Pokémon previously not known for evolving.
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Trivia[]
- The Mist Stone appears in Pokémon Infinite Fusion as a very rare evolution item. It can evolve any Pokémon that is capable of evolving, ignoring all requirements like level and friendship, however, it cannot further evolve any Pokémon that have already reached their final stage.