The damage from Counter is calculated. The damage from it is equal to twice the damage that has just been inflicted on the using pokemon by a Physical-based move (Bug, Fighting, Ground, Normal, etc.). The move that does damage to the user has to go before Counter on the same turn that Counter has been selected. If an appropriate move is not successfully used before Counter, Counter will fail.
If Counter is used on the same turn as a move that hits mutiple times in one turn (such as Doubleslap or Fury Attack), Counter will only deal back double the damage of the last hit, not the combination of damage from all hits.
Counter will fail against moves that are pulled up by the moves Metronome, Mimic, and Mirror Move, even if it would normally work against the resulting move if that move were used normally. For instance, while Counter would normally work when the opposing pokemon uses Quick Attack, Counter will not work when the opposing pokemon uses Metronome and Body Slam is then used by that Metronome attack.
The accuracy of Counter is unaffected by Accuracy/Evade modifiers. These will never prevent Counter from hitting the opposing pokemon.
This is an “Attack last” move. On the turn that it is used, if the opposing pokemon uses any move other than another “Attack last” move, the pokemon using this move will go last. If both pokemon use an “Attack last” move the order of battle will be determined by Speed as normal.
If the move used by the opponent is also an “Attack last” move and the opposing pokemon is slower, therefore causing the other pokemon to go last, Counter will automatically fail. Counter must go last in order to work.
“Attack last” moves include: Counter, Mirror Coat, Roar, Vital Throw, and Whirlwind.
Like all other damaging Normal-type attacks, Counter will not deal damage to Ghost-type pokémon due to their immunity to Normal attacks.
