What you hear at death's door is the blade's delight.
[AUTO](RC):At the end of the battle this unit attacked while boosted, if you have a grade 3 or greater vanguard with "Undercover" in its card name, [COST][put all rear-guards in the same column as this unit into soul], draw a card, and if you did not [Counter-Charge] this turn, [COST][Energy-Blast 3], and [Counter-Charge 1].