あくなき食欲
Insatiable Appetite is a Weiß Schwarz card from 富士見ファンタジア文庫 Vol.2 Fsl/W120-107. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【COUNTER】 Put all of your stock into your waiting room, and perform the following action X times. "Choose 1 of your characters, and that character gets the following ability until end of turn. "【CONT】 The character facing this card gets -1 soul."" X is equal to the number of cards put into your waiting room by this effect.