《魔剣グラム》
《Demonic Sword Gram》 is a Weiß Schwarz card from ソードアート・オンライン Vol.2 SAO/S26-058. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Choose one of your characters, and that character gets +3000 power until end of turn. Until end of turn, your opponent cannot play event cards and "Backup" from hand.