Diffusion Sliver is a foil card from the Magic: The Gathering M15 set, classified as an Unknown rarity. With a current market value of $5.45, it appeals to collectors and players alike, particularly those focused on Sliver tribal decks. Its unique ability to enhance other Slivers adds strategic depth, making it a valuable addition to both casual and competitive play. As the game's meta evolves, its value may fluctuate based on demand and availability.