Hall of Gemstone
World Enchantment · {1}{G}{G}
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.
From €8.03 at Cardmarket
World Enchantment · {1}{G}{G}
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.
From €8.03 at Cardmarket