Festering Mummy is a Common rarity card from the Amonkhet set of Magic: The Gathering, featuring art by Christopher Burdett. Valued at $0.49, it is often sought after for its utility in various formats, particularly in decks that benefit from its ability to inflict -1/-1 counters on opponents' creatures. Collectors appreciate its thematic connection to the set's Egyptian-inspired lore, as well as its integration into zombie-themed strategies.