# Serum Tank Serum Tank represents a curious artifact from Planechase's experimental design space. As an uncommon, it occupies the middle tier of limited play, offering incremental card advantage through its cumulative upkeep mechanic. Collectors view this card primarily through the lens of Planechase's unique appeal rather than constructed viability. The set itself attracts players interested in the plane-hopping format's novelty and casual multiplayer appeal. Since Serum Tank saw limited competitive play, collector interest remains modest. The nonfoil printing dominates availability, making variants unremarkable. For most collectors, this card matters mainly as part of a complete Planechase set rather than as a standalone piece with independent demand or significance.