Slush Rush

 is a Pokémon ability introduced in the seventh generation. It increases the speed of Pokémon in hail.

Description
During a hailstorm, Pokémon with this ability will have their speed doubled. Pokémon with this ability are not immune to hail damage unless they are an Ice-type unlike Sand Rush

Pokémon with Ability

 * Cubchoo
 * Beartic

As a Hidden Ability

 * Sandshrew (Alolan Form)
 * Sandslash (Alolan Form)

Trivia

 * The ability is similar to Chlorophyll, Swift Swim and Sand Rush
 * All Pokémon with this ability are Ice types
 * It is only ability introduced in the seventh generation to not be a signature ability