:[Counter Blast (1)-card with "Duo" in its card name] When an attack hits a vanguard during the battle that this unit boosted, you may pay the cost. If you do, choose one of your other rear-guards with "Duo" in its card name, return it to your hand, search your deck for up one card with the same name as that unit, reveal it to your opponent, put it into your hand, and shuffle your deck.