Dromar's Cavern is an Uncommon rarity card from the Planeshift set of Magic: The Gathering, identified by card number 138. With a current market value of $19.98, it holds a notable position among collectors, particularly those focusing on the Planechase era. The card's unique abilities and synergy with specific strategies contribute to its demand, making it a key piece for both play and collection in the game's evolving market.