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17 May 2024: Card library updated.

Hall of Gemstone

1GG · World Enchantment

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.

Similar cards

Color identity:
NameManaTypeText
Erosion UUUEnchantment — Aura Enchant land At the beginning of the upkeep of enchanted land's controller, destroy that land unless that player pays {1} or 1 life.
Lydari Druid 2GCreature — Druid When Lydari Druid enters the battlefield, for each land on the battlefield, choose a basic land type at random. Those lands become the land types chosen this way. (This effect lasts indefinitely.) 2/2
Oath of Nissa GLegendary Enchantment When Oath of Nissa enters the battlefield, look at the top three cards of your library. You may reveal a creature, land, or planeswalker card from among them and put it into your hand. Put the rest on the bottom of your library in any order. You may spend mana as though it were mana of any color to cast planeswalker spells.
Rivaz of the Claw 1BRLegendary Creature — Viashino Warlock Menace {T}: Add two mana in any combination of colors. Spend this mana only to cast Dragon creature spells. Once during each of your turns, you may cast a Dragon creature spell from your graveyard. Whenever you cast a Dragon creature spell from your graveyard, it gains "When this creature dies, exile it." 3/3
Wellspring 1GWEnchantment — Aura Enchant land When Wellspring enters the battlefield, gain control of enchanted land until end of turn. At the beginning of your upkeep, untap enchanted land. You gain control of that land until end of turn.
Nissa, Resurgent Animist 2GLegendary Creature — Elf Scout Landfall — Whenever a land enters the battlefield under your control, add one mana of any color. Then if this is the second time this ability has resolved this turn, reveal cards from the top of your library until you reveal an Elf or Elemental card. Put that card into your hand and the rest on the bottom of your library in a random order. 3/3
Guma 2RCreature — Cat Protection from blue 2/2
Shimmer 2UUEnchantment As Shimmer enters the battlefield, choose a land type. Each land of the chosen type has phasing. (It phases in or out before its controller untaps during each of their untap steps. While it's phased out, it's treated as though it doesn't exist.)
Doubling Cube 2Artifact {3}, {T}: Double the amount of each type of unspent mana you have.
Discerning Financier 2WCreature — Human Noble At the beginning of your upkeep, if an opponent controls more lands than you, create a Treasure token. (It's an artifact with "{T}, Sacrifice this artifact: Add one mana of any color.") {2}{W}: Choose another player. That player gains control of target Treasure you control. You draw a card. 2/3
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