[AUTO]:When this unit is placed by riding from "Steam Shooter, Proutta", [COST][reveal a grade 3 with "Artisaria" in its card name from ride deck], look at the top seven cards of your deck, choose up to two Crimson Moon cards or Sound System cards in total from among them, reveal them, choose a card from the revealed cards, put it into hand, discard the remaining revealed card, and shuffle the deck.