Illumise

As long as you have Volbeat in play, prevent all effects, including damage, done to Illumise by attacks from your opponent's Pokémon that has Dark in its name.

Search your deck for a Basic Pokémon and put it onto your Bench. Shuffle your deck afterward.

If the Defending Pokémon is an Evolved Pokémon, the Defending Pokémon is now Confused.