Eelektross (59) - SWSH04 Vivid Voltage

During your opponent's next turn, if they attach an Energy card from their hand to the Defending Pokémon, put 6 damage counters on that Pokémon.

This attack also does 30 damage to 1 of your Benched Pokémon and 30 damage to 1 of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)