Serra Sphinx is a creature card from the Magic: The Gathering Planar Chaos set, classified as an Unknown rarity. It features flying and vigilance, making it a versatile option in various formats. Currently valued at $0.30, it appeals to collectors seeking unique cards from the set, although its low price suggests limited competitive play. As a part of the Planar Chaos theme, it reflects the set's exploration of alternate realities in the game's lore.