Sand Rush

Doubles Speed during a sandstorm. Protects against sandstorm damage.

Full effect

This Pokémon's Speed is doubled during a sandstorm, and it does not take sandstorm damage, regardless of type.

In game description

Boosts the Pokémon's Speed stat in a sandstorm.

Pokemon with Sand Rush

#0027

Sandshrew hidden #0028

Sandslash hidden #0507

Herdier #0508

Stoutland #0529

Drilbur #0530

Excadrill #0745

Lycanroc Midday #0880

Dracozolt hidden #0882

Dracovish hidden #0972

Houndstone

Using Sand Rush in Cobblemon

Abilities are passive and always active, so Sand Rush costs you nothing to run. If it is marked hidden on a species above, expect it to be harder to obtain: servers differ in whether hidden abilities come from breeding, an Ability Patch, or events.

See the Pokedex for which abilities each species can have, and IVs, EVs and breeding for how to actually pass one down.