Heavy Strike Cannon Fortress, Freischutz D-BT07/073 C

(After a Set Order is played, put it into your Order Zone.) Operate-[AUTO](Order Zone):When this card is operated, choose one of your opponent's front row rear-guards, and retire it. If you did not retire, choose one of your opponent's vanguards, and it gets [Power]-5000 until end of turn. [AUTO](Order Zone):When your grade 3 or greater vanguard is placed by riding from a grade 3, COST [put this card into your drop], search your deck or hand for up to one "Mobile Fortress of Obliteration, Freischutz Maximum", put it into your Order Zone, and if you searched your deck, shuffle your deck. If you put it from your hand, draw a card.