:[Counter Blast (1)-card with "Deletor" in its card name & Retire this unit & Choose four of your other rear-guards with "Deletor" in its card name, and retire them] At the end of the battle that this unit attacked a vanguard, if you have a grade 3 vanguard with "Grei" in its card name, you may pay the cost. If you do, all of your vanguards.