Serperior is a Rare Holo card from the Boundaries Crossed set, numbered #13. As a Holofoil variant, it stands out in collectors' binders and showcases the Pokémon's elegant design. Currently valued at $5.09, its market presence reflects a modest demand among players and collectors alike. The card's rarity and artwork contribute to its appeal, making it a notable addition for those focused on completing their sets.