When Mirror Move executes, the using pokemon will perform the last move attempted by the opponent before the execution of Mirror Move. When the mirrored move is performed, the using pokemon's stats will be used as the attacker's stats, not the pokemon that attempted the original move.
A move that misses will still be performed by Mirror Move, but one that was prevented from being attempted (by effects such as confusion, paralysis, etc.) will not. If the opposing pokemon has not even attempted any moves since it has come into play (either it was switched in just prior to the execution of Mirror Move normally, or the switch in was due to the pokemon acting just prior to the using pokemon executed either Explosion or Selfdestruct [which means these moves cannot be copied], or it has been fully paralyzed on each of its turns), Mirror Move will fail.
Mirror Move will also be unable to 'mirror' certain moves, it will simply fail if these moves are used by the opponent just before the execution of Mirror Move. They are as follows:
1. Mirror Move and other moves which call up other attacks (Metronome, Mimic, Sleep Talk)
2. Any attack the user already knows. I.E. if the using pokemon has Thunderbolt, Double Team, and Rest and the opponent uses Thunderbolt just prior to the execution of Mirror Move, Mirror Move will fail.
3. Sketch and Transform.
Mirror Move itself (not the move that it causes the user to perform) is unaffected by Accuracy/Evade modifiers.
