Cosmic Cube (Borderless) (0312) Price

Updated 2026-09-28

Cosmic Cube in the borderless treatment from Marvel Super Heroes is a Mythic from one of Magic's most high-profile IP collaborations. The Marvel set attracted intense early buyer interest and speculative premium pricing at launch, and the 90-day price window reflects that original spike: gains of over 50 percent over the period. The sharp 30-day decline indicates the market is actively correcting: launch buyers are rotating out, and the price is searching for a post-hype equilibrium. Borderless Mythics from high-profile crossover sets occupy a distinct collector segment because they attract IP fans who do not normally participate in card singles markets. That broader audience is less price-anchored, which amplifies movement in both directions. The current trajectory looks like a card still finding its floor. Long-term pricing will depend on how deeply Marvel IP buyers engage with singles once the set's novelty diminishes. Watch for stabilization before sizing a position.