Diva of Threnody, Mariette

[AUTO]:When this unit is rode upon by "Diva of Greeting Gloom, Roselita", look at the top seven cards of your deck, choose up to one card with "PR♥ISM" in its card name from among them, reveal it and put it into hand, and shuffle the deck. If you did not reveal a card, you may call this card to (RC). If you called a card, [Soul-Charge 1].