Prison Gate Star-vader, Palladium

:When this unit is placed on from hand, if you have a grade 3 or greater vanguard with "Star-vader" in its card name, and your opponent has a locked card, 3, choose one of your opponent's rear-guards, and lock it. At the end of that turn, unlock the card locked by this ability. :When your grade 3 or greater vanguard with "Star-vader" in its card name attacks, if your rear-guard did not by the ability of your card with the same card name as this unit this turn, [put this unit into soul], choose one of your rear-guards with "Star-vader" in its card name, and it. If your opponent's vanguard is grade 3 or greater, that chosen unit gets +5000 until end of turn.