Madolche Chateau (REDU-EN061) [Return of the Duelist]

When this card is activated: Shuffle all "Madolche" monsters in your Graveyard into the Deck. All "Madolche" monsters on the field gain 500 ATK and DEF. If a monster(s) in your Graveyard would be returned to the Deck by the effect of a "Madolche" monster, you can add it to your hand instead.