Key of Dreams is a Weiß Schwarz card from [TD] Cardcaptor Sakura : Clear Card CCS/WX01-T17. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Choose up to 2 characters in your waiting room, return them to your hand, choose 1 card in your hand, and put it into your waiting room.