Golduck

Damp: Explosion and Selfdestruct will not work while the Pokémon is on the field.
Cloud Nine: All weather effects are negated while the Pokémon is on the field.
Hidden Ability (Available):
Swift Swim: When rainy, The Pokémon’s Speed doubles. However, Speed will not double on the turn weather becomes Heavy Rain.


https://www.fanfiction.net/s/5348024/1/Golduck-s-True-Feelings