Price
Effect
In battle
If held by a Medicham, allows it to Mega Evolve into Mega Medicham if its Trainer has a Key Stone. Each Trainer can only Mega Evolve one Pokémon per battle.
Unaffected by item negating effects (such as Embargo and Klutz). Item manipulating effects (such as Trick and Fling) cannot give Medicham a Medichamite or remove a Medichamite from Medicham.
Outside of battle
If held by a Medicham, allows it to Mega Evolve into Mega Medicham when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Medicham will remain a Mega Medicham until the Talent Round ends.
Description
Games
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Description
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XY
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One variety of the mysterious Mega Stones. Have Medicham hold it, and this stone will enable it to Mega Evolve during battle.
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ORAS SMUSUM
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One of a variety of mysterious Mega Stones. Have Medicham hold it, and this stone will enable it to Mega Evolve during battle.
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Acquisition