Once during your opponent's turn, if Shedinja would be Knocked Out by damage from an attack, you may put 4 damage counters on the Attacking Pokémon and each of your opponent's Pokémon that has the same name as the Attacking Pokémon.

Put 3 damage counters on the Defending Pokémon. If Shedinja has any damage counters on it, the Defending Pokémon is now Confused.