Gemstone Caverns [TSP - 274]Rarity: R #: 274 Creature Type or Sub Type: Legendary Land Rules Text Contains: If Gemstone Caverns is in your opening hand and you're not playing first, you may begin the game with Gemstone Caverns in play with a luck counter on it. If you do, remove a card in your hand from the game. T: Add 1 to your mana pool. If Gemstone Caverns has a luck counter on it, instead add one mana of any color to your mana pool.