"Prey Upon [Foil]" is a card from the Aether Revolt set of Magic: The Gathering, categorized as an Unknown rarity. It features a unique foil treatment that enhances its visual appeal for collectors. Currently valued at $0.19, this card offers an affordable option for players and collectors alike, particularly those interested in green spells that emphasize creature interactions. Its market presence reflects a niche demand, typical of lesser-known cards in the broader set.