If there is a "Madolche Chateau" in your possession, it'll be added to your hand.
Since "Ticket" says "Madolche" card, if your opponent attacks your face-down "Madolche Marmalmaide" while "Ticket" is on your field, a Spell/Trap Card can be added back and "Ticket" add a "Madolche" monster from your Deck to your hand.
This card combos perfectly with the effect of "Madolche Queen Tiaramisu", which is to return "Madolche" cards to the Deck (or hand, if "Madolche Chateau" is active).
Due to "Madolche" monsters' inherent abilities to return themselves to the Deck, this card will allow yourself to search for a "Madolche" whenever one is destroyed by your opponent.
If there is a "Madolche Chateau", then both old and new cards can be added from your Graveyard and Deck.
While this card and the effect of your opponent's "Deck Devastation Virus" is active; if a "Madolche" is drawn that would be destroyed, and this card's effect would triggered. A "Madolche" monster can be searched, that monster that was searched for will not be destroyed. Also, if there is a "Madolche Chateau" on your field, the destroyed monster can be added back to your hand and still search.