Sulfurous Mire is a land card from the Kaldheim set of Magic: The Gathering, classified as an Unknown rarity with the card number 270. It provides a dual mana source, allowing players to tap it for either black or green mana, which enhances its utility in multicolor decks. Currently valued at $0.40, it remains an accessible option for collectors and players alike, reflecting its niche role in the broader market.