Spiritual King of Ignition, Valnout (D-SS05/001EN) [D-SS05: Festival Booster 2023]

(You may only have one [Over] trigger in a deck. When revealed as a trigger, remove that card, draw a card, choose one of your units, and it gets [Power] +100 Million until end of turn! If revealed during drive check, activate its additional effect!) Additional Effect - Choose one of your [Stand] rear-guards, and it gets"[AUTO](RC)[1/turn]: At the end of the battle this unit attacked, [Stand] this unit." until end of turn. If you did not choose a card, draw a card, choose up to one unit card from your hand, and call it to (RC).