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Lowers the target's accuracy by one stage. Pokemon protected by Magic Coat or the ability Magic Bounce are unaffected and instead redirect this move back to the user.
The effect of Sand-Attack is not particularly useful in most competitive matches because reducing the foe's accuracy is not a reliable strategy, as the opponent can simply switch out to negate the effect. The majority of players would prefer to incapacitate a foe completely (inducing sleep, for example) or simply use a set-up move.
Flash is a Normal-type equivalent.
Kinesis is a Psychic-type equivalent.
SmokeScreen is a Normal-type equivalent.
Mud-Slap deals damage along with lowering the opponent's accuracy one stage.