“秘密にしてたこと”シャロ is a Weiß Schwarz card from ご注文はうさぎですか？？ GU/W44-009. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 ［Place 1 card from Hand into Waiting Room］ When this card attacks, if 「私の秘密」 is in the Climax slot, you may pay the Cost. If you did, look at up to 4 cards from the top of your Deck, choose up to 1 card with 「シャロ」 or 「千夜」 in its name, add it to Hand, place the remaining cards into Waiting Room, during this turn, this card gets +2500 Power.
This card was printed in Japanese only; the English text above is an unofficial community translation.