Hall of Gemstone Tweet Near Mint, English, limit 16 $5.11 / $6.39 credit Lightly Played, English, limit 16 $4.60 / $5.75 credit Moderately Played, English, limit 16 $4.09 / $5.11 credit Heavily Played, English, limit 16 $3.58 / $4.48 credit 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