As long as Pinsir is the only Pokémon you have in play, your opponent's Basic Pokémon can't attack.

Search your deck for a Pokémon (excluding Pokémon-ex), show it to your opponent, and put it into your hand. Shuffle your deck afterward.

Does 20 damage to 1 of your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)