Prey Upon is a Magic: The Gathering card from the Eldritch Moon set (Unknown rarity, #166) that provides a copyable combat removal effect useful in creature-heavy decks. The description and mechanic make it of interest to casual players and collectors tracking tribal or creature-focused play patterns. At a current market value of $0.04, it sits at the low end of secondary-market pricing. Condition and grading can affect resale, but demand remains modest.