甘い葡萄を酸っぱい葡萄に変える魔法 is a Weiß Schwarz card from 葬送のフリーレン 新装版 SFN/S128-106. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
If you do not have an 《Adventurer》 or 《Magic》 character, this card cannot be played from your hand. You may choose 1 of your opponent's level 1 or higher characters. If you do, your opponent chooses 1 level X or lower character in their waiting room, and exchanges them. X is equal to the level of the character you chose -1. Put this card into your stock.