[AUTO](RC):[Counter Blast (1)] When your vanguard Legion, you may pay the cost. If you do, choose one of your vanguards, and until end of turn, it gets "[AUTO](VC):When this unit attacks a vanguard, your opponent may choose one of his or her rear-guards, and retires it. If he or she does not, until end of that battle, your opponent cannot call cards from hand to (GC).".