Sandstorm creates a sandstorm on the battlefield that lasts for 5 turns and induces these additional effects:
- All Pokemon except Rock, Ground and Steel types and those with the Sand Veil, Sand Rush or Sand Force abilities, lose 1⁄16 of their max HP at the end of each turn.
- Pokemon with the Sand Veil ability increase their evasion by 20%.
- Pokemon with the Sand Rush ability double their speed.
- Pokemon with the Sand Force ability increase the power of Rock, Ground and Steel type moves by 30%.
- The Special Defense of Rock-type Pokemon is increased by 50%.
- The move Weather Ball changes to Rock type and doubles in power.
- The power of SolarBeam decreases by 50%.
- The moves Synthesis, Morning Sun and Moonlight recover 1⁄4 of the user's max HP (instead of the usual 1⁄2 HP).