Sandstorm is a Rock-type move that causes a sandstorm that lasts five turns. If the user is holding a Smooth Rock, the sandstorm will last eight turns.
A sandstorm will damage all Pokémon that are not Steel, Rock, or Ground-type by 116 of their HP. Pokémon with the Safety Goggles held item, the Overcoat Ability, or the Sand Veil Ability are also immune to this damage. Pokémon that are in the intermediate stage of Dig will not take damage during that turn. Synthesis, Morning Sun, and Moonlight will heal 14 HP. Rock-type Pokémon will have their Special Defense raised by 1.5× while a sandstorm is present.