# Underground Sea (Limited Edition Alpha) Underground Sea represents a cornerstone of Magic's dual land design. As one of the original ten dual lands from Alpha, it established the template for fixing blue and black mana that persists today. Collectors value it primarily for historical significance rather than gameplay impact, since Alpha printings command premiums based on set scarcity and condition. The card's appeal splits between format players seeking functional copies and collectors pursuing complete Alpha sets. Condition matters considerably here—even lightly played copies show visible wear. Underground Sea's nonfoil status is standard for Alpha, making variants less of a consideration. Its desirability stems from being foundational Magic rather than from any particular mechanical innovation, making it essential for serious vintage collectors.