Count the number of your opponent's Pokémon. Search your deck for up to that number of Basic Pokémon and put them onto your Bench. Shuffle your deck afterward.
If you have a Stadium card in play, remove 1 damage counter from each of your Pokémon. If your opponent has a Stadium card in play, this attack does 10 damage to each of your opponent's Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)