Fierce Attack Star-vader, Dubnium

:[ 1 & Retire this unit] At the end of your turn, you may pay the cost. If you do, your opponent chooses one of his or her rear-guards, and locks it. : 1 When this unit attacks, if you have a vanguard 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 he or she may put it on his or her as a locked card. If he or she did not, you draw a card, and this unit gets +10000 until end of that battle.