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You need to own at least 60 Pokemon for Oak to give you the National Dex. Get the ruby and give it to Celio. Once you give Celio the Ruby he will give you a rainbow pass so you can go to all islands. Give him the Sapphire and you can go to Cerulean Cave, where you catch Mewtwo. Also, you can trade pokémon to emerald, ruby and sapphire versions.

-The Dreamer

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15y ago

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