Mountain is a basic land card from the Magic: The Gathering Archenemy set, identified with the card number #145 and classified as an Unknown rarity. It plays a fundamental role in the game's mana system, allowing players to generate red mana essential for casting spells. Currently valued at $0.24, it remains a staple in various deck archetypes, appealing to both casual players and collectors alike. Grading or sales data for this card typically reflects its widespread use rather than rarity.