# Geothermal Bog Geothermal Bog is a common dual land from Dominaria United that produces black or red mana. Collectors view it as a functional utility land rather than a chase piece, though dual lands at common rarity tend to hold modest collector interest since they see play across multiple formats and casual decks. The card exists in nonfoil and foil variants, with foil versions appealing to players who prefer premium finishes for their constructed decks. As a common, it's readily available and inexpensive, making it accessible for anyone building collections or completing sets. Most collectors appreciate common lands primarily for set completion rather than investment potential, though the dual-land utility ensures steady demand from players seeking mana fixing options.