[AUTO](RC):When it attacks a vanguard, if all fighters' units are [Rest], [COST][Counter-Blast 1], until end of that battle, this unit gets [Power] +20000, then, [COST][Soul-Blast 2] grade 3], your opponent chooses a card from his or her hand, discards it, and he or she can only call the same grade from his or her hand as the discarded card's grade.