Star-vader, Chaos Breaker Close

:[Choose a card with "Star-vader" in its card name from your hand, and discard it] When this unit is placed on , or when your G unit with "Star-vader" in its original card name , you may pay the cost. If you do, 1, choose one of your opponent's rear-guards, and lock it. : 1 When this card is discarded from hand, if you have a heart card with "Chaos" in its card name, you may pay the cost. If you do, your opponent chooses a card from his or her hand, and puts it on his or her as a locked card.