Fling power—
Held: Allows Gyarados to Mega Evolve into Mega Gyarados.
In game
One of a variety of mysterious Mega Stones. Have Gyarados hold it, and this stone will enable it to Mega Evolve during battle.
Mega Evolution 1
| Pokémon | Types |
|---|---|
 Mega Gyarados | waterdark |