Card Codex

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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
Squandered Resources BGEnchantment Sacrifice a land: Add one mana of any type the sacrificed land could produce.
Daxos of Meletis 1WULegendary Creature — Human Soldier Daxos of Meletis can't be blocked by creatures with power 3 or greater. Whenever Daxos of Meletis deals combat damage to a player, exile the top card of that player's library. You gain life equal to that card's mana value. Until end of turn, you may cast that card and you may spend mana as though it were mana of any color to cast that spell. 2/2
Song of Freyalise 1GEnchantment — Saga (As this Saga enters and after your draw step, add a lore counter. Sacrifice after III.) I, II — Until your next turn, creatures you control gain "{T}: Add one mana of any color." III — Put a +1/+1 counter on each creature you control. Those creatures gain vigilance, trample, and indestructible until end of turn.
Unified Front 3WSorcery Converge — Create a 1/1 white Kor Ally creature token for each color of mana spent to cast this spell.
Evelyn, the Covetous 2U/BBB/RLegendary Creature — Vampire Rogue Flash Whenever Evelyn, the Covetous or another Vampire enters the battlefield under your control, exile the top card of each player's library with a collection counter on it. Once each turn, you may play a card from exile with a collection counter on it if it was exiled by an ability you controlled, and you may spend mana as though it were mana of any color to cast it. 2/5
Invoke Prejudice UUUUEnchantment Whenever an opponent casts a creature spell that doesn't share a color with a creature you control, counter that spell unless that player pays {X}, where X is its mana value.
The Rack 1Artifact As The Rack enters the battlefield, choose an opponent. At the beginning of the chosen player's upkeep, The Rack deals X damage to that player, where X is 3 minus the number of cards in their hand.
Nyxbloom Ancient 4GGGEnchantment Creature — Elemental Trample If you tap a permanent for mana, it produces three times as much of that mana instead. 5/5
Dire Mimic 2Artifact — Treasure Flash {T}, Sacrifice Dire Mimic: Add one mana of any color. {3}: Dire Mimic becomes a Shapeshifter artifact creature with base power and toughness 5/5 until end of turn.
Stalking Leonin 2WCreature — Cat Archer When Stalking Leonin enters the battlefield, secretly choose an opponent. Reveal the player you chose: Exile target creature that's attacking you if it's controlled by the chosen player. Activate only once. 3/3
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