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Effect / Mechanics
Held: Allows Swampert to Mega Evolve into Mega Swampert.
Source: PokeAPI
In-game description
"One of a variety of mysterious Mega Stones. Have Swampert hold it, and this stone will enable it to Mega Evolve during battle."
Fling Power
80 Power
Power of the move "Fling" when using this item.