Swift Swim
Summary: Doubles Speed during rain and in water.
Description
This Pokémon is unusually adept at swimming and otherwise moving through wet environments. Consequently, when an arena becomes drenched by the rain, such a Pokémon enjoys ease of movement much greater than normal, causing their base speed to double for the duration of the rain. These Pokémon also have their speed doubled when moving through water, whether or not it is raining.