Star-vader, Robin Knight

:Forerunner (When a unit of the same clan rides this unit, you may call this unit to ) :[ 1 & Put this unit into your soul] If your vanguard is [Legion], and your opponent has a locked card, choose a rear-guard in your opponent's front row and back row, and lock them. (The locked card is turned face down, and cannot do anything. It turns face up at end of the owner's turn.)