Generation Vii
Water Bubble
Lowers the power of Fire-type moves done to the Pokémon and prevents the Pokémon from getting a burn.
Detailed Effect
When this Pokémon is hit by a Fire move, the damage is halved. When this Pokémon uses a Water move, the power is doubled. This Pokémon cannot be burned, and if it becomes burned, the burn is immediately cured.
Pokémon With Water Bubble
3 canonical Pokémon forms can have this Ability.
Dewpider 
Araquanid 
Araquanid Totem