Gingham Guide Rem SR (RZ/S116-E083S) Re:ZERO -Starting Life in Another World- Vol.3 Card details

[AUTO] When this card is placed on the stage from your hand, choose 1 of the following effects, and perform it. "You may return all cards from your waiting room to your deck. If you do, shuffle your deck." "Your opponent returns all cards from their stock to their deck, shuffles their deck, and puts the same number of cards from the top of their deck into their stock."
[AUTO] [Put 1 card from your hand into your waiting room] When this card is placed on the stage from your hand, you may pay the cost. If you do, your opponent puts the top 8 cards of their deck into their waiting room.