Hall of Gemstone Tweet Near Mint, English, limit 31 $6.50 Lightly Played, English, limit 25 $5.85 Moderately Played, English, limit 25 $5.20 Buy this product instead Details Color: Green Card Text: At the beginning of each player's upkeep, that player chooses a color. Until end of turn, lands tapped for mana produce mana of the chosen color instead of any other color. Rarity: R Cost: 1GG Card Type: Enchantment Name: Hall of Gemstone Finish: Regular Set Name: Mirage