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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
Insidious Roots BGEnchantment Creature tokens you control have "{T}: Add one mana of any color." Whenever one or more creature cards leave your graveyard, create a 0/1 green Plant creature token, then put a +1/+1 counter on each Plant you control.
Baldur's Gate Legendary Land — Gate {T}: Add {C}. {2}, {T}: Add X mana of any one color, where X is the number of other Gates you control.
Risky Move 3RRREnchantment At the beginning of each player's upkeep, that player gains control of Risky Move. When you gain control of Risky Move from another player, choose a creature you control and an opponent. Flip a coin. If you lose the flip, that opponent gains control of that creature.
Mask of Intolerance 2Artifact At the beginning of each player's upkeep, if there are four or more basic land types among lands that player controls, Mask of Intolerance deals 3 damage to that player.
Smokestack 4Artifact At the beginning of your upkeep, you may put a soot counter on Smokestack. At the beginning of each player's upkeep, that player sacrifices a permanent for each soot counter on Smokestack.
Rarity 1WULegendary Creature — Unicorn Rare and mythic rare spells you cast cost {1} less to cast. {1}, {T}, Reveal a My Little Pony® toy you own: Until end of turn, another target creature gains protection from each color in that toy's coat, mane, and outfit. 2/2
Sands of Time 4Artifact Each player skips their untap step. At the beginning of each player's upkeep, that player simultaneously untaps each tapped artifact, creature, and land they control and taps each untapped artifact, creature, and land they control.
Limited Resources WEnchantment When Limited Resources enters the battlefield, each player chooses five lands they control and sacrifices the rest. Players can't play lands as long as ten or more lands are on the battlefield.
Mudslide 2REnchantment Creatures without flying don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player may choose any number of tapped creatures without flying they control and pay {2} for each creature chosen this way. If the player does, untap those creatures.
Epic Struggle 2GGEnchantment At the beginning of your upkeep, if you control twenty or more creatures, you win the game.
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