"Protective Sphere" is a card from the Invasion set of Magic: The Gathering, classified as Unknown rarity. Currently valued at $0.21, it serves as a niche option for collectors and players alike, often appealing to those interested in the thematic elements of the set. As part of a set that emphasizes multicolor strategies, its market value reflects its limited utility in competitive play and collector interest. Graded examples remain scarce, influencing its desirability among enthusiasts.