"Swamp [Foil]" is a basic land card from the Onslaught set of Magic: The Gathering, classified as an Unknown rarity. Valued at approximately $4.62, this foil version offers collectors a visually enhanced representation of a staple land type. As a fundamental resource in various Magic decks, its foil variant appeals to both players and collectors, contributing to its market presence. Current sales data reflects stable interest among enthusiasts in the trading card community.