Knight of Soaring Blade, Ffernbael

[AUTO]Back Row Center (RC):At the end of the battle this unit attacked, if your opponent's vanguard is grade 3 or greater, [COST][Soul-Blast 1 & discard a card from hand], choose one of your vanguards with "Gramgrace" in its card name, and it gets [Power] +10000/drive +1 until end of turn.