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Deals damage and has a 30% chance to lower the target's accuracy by one stage.
Mirror Shot has little competitive use. It is weak compared other special Steel-type attacks, has poor accuracy, and to top it all off, Steel is a bad offensive typing anyway. The chance to lower accuracy is also not a significant perk, as relying on lowering the opponent's accuracy is an unreliable tactic.
Flash Cannon is a more powerful option and has a chance to lower the target's Special Defense stat by one stage.
Mud Bomb is a Ground-type equivalent.
Octazooka is a Water-type equivalent.