Star-vader, Chaos Breaker Dragon (G-CB06/Re:02EN) [Rondeau of Chaos and Salvation]

[ACT](VC)[1/Turn]: [Counter Blast (1) & Choose a card with "Star-vader" in its card name from your hand, and discard it] Choose one of your opponent's rear-guards, and lock it. [AUTO](VC) Limit Break 4 : [Soul Blast (1)-card with "Star-vader" in its card name] During your opponent's end phase, when an opponent's locked card is unlocked, you may pay the cost. If you do, retire that unit, and draw a card. [CONT](VC/RC): Lord