The 10 Most Valuable MTG Cards from The List, September 2023 – #3 Gemstone Caverns

One of the few valuable The List cards that doesn’t often see heavy play in Commander is Gemstone Caverns, a unique colorless mana source that offers applications in constructed formats such as Modern and Legacy. For Modern, the card appears in Tron, Temur Rhinos, and Hardened Scales, with the latter seeing a resurgence after a few solid finishes in Magic Online Modern Challenges. While you mostly see Gemstone Caverns as a single copy given the effect, being able to cheat ahead on mana while on the draw is an excellent thing to do. With two printings in Time Spiral and an upshift to Mythic Rare in Time Spiral Remastered, Gemstone Caverns commands a high value as the effect is unusual and rewards mulliganing when on the draw.