龍の血の呪い クルシュ is a Weiß Schwarz card from 「Re:ゼロから始める異世界生活」Vol.4 RZ/S132-018. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When this is placed on stage from hand, reveal the top card of your deck. If that card is a 《Magic》, 《Weapon》 or 《Merchant》 character or {Yellow U 1/0 Event}, choose 1 of your opponent's Front Row characters, this turn, it gets -6000 power. 【AUTO】 When this attacks, choose 1 of your other characters, this turn, it gets +X power. X equals that character's Soul times 1000.
This card was printed in Japanese only; the English text above is an unofficial community translation.