Death Star-vader, Glueball Dragon

-Stride Step-[Choose one or more cards with the sum of their grades being 3 or greater from your hand, and discard them] this card on your from face down. :[ 1 & Choose a face down card with the same card name as this unit from your G zone, and turn it face up] If you have a heart card with "Star-vader" in its card name, your opponent chooses one of his or her rear-guards for each face up card in your G zone, and locks them. :All of the units in your front row with "Star-vader" in their card names get +3000 for each of your opponent's locked cards.