Swift Swim

 is an Ability that raises a Pokémon's attack speed in rain.

Effect
If the weather is rain, the Pokémon's attack speed is doubled.

Pokémon with

 * Psyduck
 * Golduck
 * Poliwag
 * Poliwhirl
 * Poliwrath
 * Horsea
 * Goldeen
 * Seaking
 * Magikarp
 * Omanyte
 * Omastar
 * Kabuto
 * Kabutops
 * Qwilfish
 * Mantine
 * Kingdra
 * Swampert
 * Mega Swampert
 * Lotad
 * Lombre
 * Ludicolo
 * Surskit
 * Anorith
 * Armaldo
 * Feebas
 * Huntail
 * Gorebyss
 * Relicanth
 * Luvdisc
 * Buizel
 * Floatzel
 * Finneon
 * Lumineon
 * Mantyke
 * Tympole
 * Palpitoad
 * Seismitoad
 * Tirtouga
 * Carracosta
 * Beartic
 * Chewtle
 * Drednaw
 * Arrokuda
 * Barraskewda