Dry Skin

 is an Ability that restores the users HP if they're hit by Water-type moves or in Rainy weather, or reduces HP if they're hit by Fire-type moves or in Sunny weather.

Effect
If the user is hit by a Water-type move, a quarter of it's max HP will be restored, along with the move having no effect on the user. In Rainy weather, the user regains ⅛ of it's max HP every 5 steps.

Conversely, Fire-type moves do 25% more damage to the user, and in Sunny weather the user loses ⅛ of it's max HP every 10 steps.

Pokémon with

 * Paras
 * Parasect
 * Jynx
 * Croagunk
 * Toxicroak
 * Helioptile
 * Heliolisk