Cultus Witch, Rias

:[Legion 20000]"Inspection Witch, Deirdre"(If your opponent's vanguard is grade 3 or greater, this unit may return four cards from your drop zone into your deck once, search your deck for the specified card, and Legion) :[Choose one of your rear-guards with "Witch" in its card name, and retire it] When this unit [Legion], you may pay the cost. If you do, choose one of your opponent's vanguards, and that unit gets -5000 for each of your opponent's grade 0 rear-guards until end of turn.. : 2 Choose one of your opponent's with a rear-guard, your opponent reveals five cards from the top of his or her deck, chooses a grade 0 card from them, calls it to that , and shuffles his or her deck.