If the Team Rocket's Pokémon this card is attached to is in the Active Spot and is damaged by an attack from your opponent's Pokémon (even if this Team's Rocket's Pokémon is Knocked Out), the Attacking Pokémon is now Asleep
Attach Team Rocket's Hypnotizer to 1 of your Pokémon that doesn't have a Pokémon Tool attached to it.