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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
Esika, God of the Tree 1GGLegendary Creature — God Vigilance {T}: Add one mana of any color. Other legendary creatures you control have vigilance and "{T}: Add one mana of any color." 1/4
Rainbow Vale Land {T}: Add one mana of any color. An opponent gains control of Rainbow Vale at the beginning of the next end step.
Glistening Sphere 3Artifact Glistening Sphere enters the battlefield tapped. When Glistening Sphere enters the battlefield, proliferate. {T}: Add one mana of any color. Corrupted — {T}: Add three mana of any one color. Activate only if an opponent has three or more poison counters.
Pale Moon 1UInstant Until end of turn, if a player taps a nonbasic land for mana, it produces colorless mana instead of any other type.
Ilysian Caryatid 1GCreature — Plant {T}: Add one mana of any color. If you control a creature with power 4 or greater, add two mana of any one color instead. 1/1
Cryptolith Fragment 3Artifact Cryptolith Fragment enters the battlefield tapped. {T}: Add one mana of any color. Each player loses 1 life. At the beginning of your upkeep, if each player has 10 or less life, transform Cryptolith Fragment.
Verdant Haven 2GEnchantment — Aura Enchant land When Verdant Haven enters the battlefield, you gain 2 life. Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.
Charm School 2WEnchantment As Charm School enters the battlefield, choose a color and balance Charm School on your head. Prevent all damage that would be dealt to you by sources of the chosen color. When Charm School falls off your head, sacrifice Charm School.
Underdome Land {T}: Add {C}. {T}: Add one mana of any color. Spend this mana only to pay Un-costs.
Arcum's Astrolabe SSnow Artifact ({S} can be paid with one mana from a snow source.) When Arcum's Astrolabe enters the battlefield, draw a card. {1}, {T}: Add one mana of any color.
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