Price
Effect
In battle
If held by an Slowbro, allows it to Mega Evolve into Mega Slowbro 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 Slowbro a Slowbronite or remove a Slowbronite from Slowbro.
Outside of battle
If held by an Slowbro, allows it to Mega Evolve into Mega Slowbro when it performs a Spectacular Talent during a Pokémon Contest Spectacular while its Trainer has a Key Stone. Slowbro will remain a Mega Slowbro until the Talent Round ends.
Pokémon holding Slowbronite in Pokémon Omega Ruby and Alpha Sapphire cannot be traded to Pokémon X and Y.
Description
Games
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Description
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ORAS SMUSUM
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One of a variety of mysterious Mega Stones. Have Slowbro hold it, and this stone will enable it to Mega Evolve during battle.
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Acquisition