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Lowers the target's accuracy one stage.
Sand-attack has little to no competitive use. Using moves that affect accuracy is an ineffective strategy since many players switch their Pokemon out often, resetting the accuracy boosts. Its main use is to annoy new players in-game fighting puny Pidgey.
Flash is a Normal-type equivalent.
Kinesis is a Psychic-type equivalent.
SmokeScreen is a Normal-type equivalent.