Fast Lightning of Dark Night Undercover, Wiola (DZ-BT09/FR33EN) [DZ-BT09: Super Brave Detonation]

[AUTO]:When this unit is placed on (RC), if you have a vanguard with "Undercover" in its card name, perform one of the following. [COST][Energy-Blast 2], search your deck for up to one "Monitored Tryst", discard it, and shuffle the deck. [COST][Counter-Blast 1], choose a card from your undercover gauge, turn it face up, put it into hand if it is a card with "Undercover" in its card name, and turn it face down if not.