Revenger, Raging Fall Dragon "Reverse" (D-VS04/SP02EN)

[ACT](VC):[COST][Lock one of your rear-guards with "Revenger" in its card name], choose three of your units with "Revenger" in their card names, and they get [Power] +5000 until end of turn. [AUTO](VC)[1/turn]:This ability's cost is reduced by [Counter-Blast 1 for each of your locked cards. At the end of the battle this unit attacked, [COST][Counter-Blast 3 & discard three cards from your hand], choose up to two of your [Stand] rear-guards, and lock them. Then, if you have two or more locked cards or five cards in your damage zone, [Stand] this unit.