Star-vader, Chaos Breaker Dragon DZ-BT15/010 RRR

[ACT](VC)1/Turn:COST [Counter Blast (1)], choose one of your opponent's rear-guards, and lock it. If you did not lock a front row unit, draw a card, and this unit gets [Power]+10000 until end of turn. [CONT](VC):During your turn, if your opponent's rear-guard was locked this turn, this unit gets "[CONT](VC):If your damage zone has four or more cards, or you persona rode this turn, all of your front row rear-guards with "Star-vader" in their card names get [Power]+5000, and this unit gets [Power]+10000/[Critical]+1.". [AUTO](VC)1/Turn:When your opponent's rear-guard is unlocked during any player's end phase, COST [Soul Blast (1) card with "Star-vader" in its card name], draw a card, and retire all of your opponent's rear-guards that were unlocked this turn.