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Cheerful Singing is a Weiß Schwarz card from 劇場版 ソードアート・オンライン -オーディナル・スケール- SAO/S51-067. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you do not have a character with "Silica(シリカ)" in its card name, this card cannot be played from your hand. Reveal the top card of your deck, choose a level X or lower character in your waiting room, and return it to your hand. X is equal to the level of the revealed card. (Climax are regarded as level 0. The revealed card is returned to its original place)