Name: Sickening Shoal Cost: XBB CMC: 2 Color: B CID: B Type: Instant -- Arcane Rules Text: You may exile a black card with mana value X from your hand rather than pay this spell's mana cost. Target creature gets -X/-X until end of turn. Set/Rarity: Betrayers of Kamigawa rare Set Code: BOK-R Legality: Legal in predh, Legal in legacy, Legal in vintage, Legal in oathbreaker, Legal in modern, Legal in duel, Legal in penny, Legal in commander Price: $9.22 Foil price: $85.00