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 duel, Legal in predh, Legal in commander, Legal in legacy, Legal in penny, Legal in vintage, Legal in oathbreaker, Legal in modern Price: $13.02 Foil price: $67.86