The soul of a B-Hero exists even within a body of steel.
[AUTO](RC):At the end of the battle this unit attacked, if you have a vanguard with "B-Hero" in its card name, [COST][Soul-Blast 1 & retire this unit], choose a card scouted to your Base, put it into hand, choose up to one Base card from your hand or drop, and put it into the order zone as [Rest].