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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
Ancient Ziggurat Land {T}: Add one mana of any color. Spend this mana only to cast a creature spell.
Chameleon Spirit 3UCreature — Illusion Spirit As Chameleon Spirit enters the battlefield, choose a color. Chameleon Spirit's power and toughness are each equal to the number of permanents of the chosen color your opponents control. */*
The Ruinous Powers 2BREnchantment At the beginning of your upkeep, choose an opponent at random. Exile the top card of that player's library. Until end of turn, you may play that card and you may spend mana as though it were mana of any color to cast it. When you cast a spell this way, its owner loses life equal to its mana value.
Phyrexian Altar 3Artifact Sacrifice a creature: Add one mana of any color.
Trace of Abundance R/WGEnchantment — Aura Enchant land Enchanted land has shroud. (It can't be the target of spells or abilities.) Whenever enchanted land is tapped for mana, its controller adds an additional one mana of any color.
Volrath's Laboratory 5Artifact As Volrath's Laboratory enters the battlefield, choose a color and a creature type. {5}, {T}: Create a 2/2 creature token of the chosen color and type.
Rift Sower 2GCreature — Elf Druid {T}: Add one mana of any color. Suspend 2—{G} (Rather than cast this card from your hand, you may pay {G} and exile it with two time counters on it. At the beginning of your upkeep, remove a time counter. When the last is removed, you may cast it without paying its mana cost. It has haste.) 1/3
Laser Screwdriver 3Artifact {T}: Add one mana of any color. {1}, {T}: Tap target artifact. {2}, {T}: Surveil 1. (Look at the top card of your library. You may put that card into your graveyard.) {3}, {T}: Goad target creature. (Until your next turn, it attacks each combat if able and attacks a player other than you if able.)
Dream Coat UEnchantment — Aura Enchant creature {0}: Enchanted creature becomes the color or colors of your choice. Activate only once each turn.
Jaspera Sentinel GCreature — Elf Rogue Reach {T}, Tap an untapped creature you control: Add one mana of any color. 1/2
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