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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
Farewell to Arms 1BBEnchantment As Farewell to Arms enters the battlefield, choose a hand attached to an opponent's arm. When the chosen hand isn't behind its owner's back, sacrifice Farewell to Arms. If you do, that player discards their hand . . . of cards. (The lawyers wouldn't let us do it the other way.)
Necrogen Mists 2BEnchantment At the beginning of each player's upkeep, that player discards a card.
Skyshroud War Beast 1GCreature — Beast Trample As Skyshroud War Beast enters the battlefield, choose an opponent. Skyshroud War Beast's power and toughness are each equal to the number of nonbasic lands the chosen player controls. */*
Stronghold Gambit 1RSorcery Each player chooses a card in their hand. Then each player reveals their chosen card. The owner of each creature card revealed this way with the lowest mana value puts it onto the battlefield.
Druids' Repository 1GGEnchantment Whenever a creature you control attacks, put a charge counter on Druids' Repository. Remove a charge counter from Druids' Repository: Add one mana of any color.
Sisay's Ingenuity UEnchantment — Aura Enchant creature When Sisay's Ingenuity enters the battlefield, draw a card. Enchanted creature has "{2}{U}: Target creature becomes the color of your choice until end of turn."
Half-Shark, Half- Creature — Shark At the beginning of your upkeep, Augment {5}{U} ({5}{U}, Reveal this card from your hand: Combine it with target host. Augment only as a sorcery.) +3/+3
Mind Bend UInstant Change the text of target permanent by replacing all instances of one color word with another or one basic land type with another. (For example, you may change "nonblack creature" to "nongreen creature" or "forestwalk" to "islandwalk." This effect lasts indefinitely.)
Paradox Haze 2UEnchantment — Aura Enchant player At the beginning of enchanted player's first upkeep each turn, that player gets an additional upkeep step after this step.
Uktabi Efreet 2GGCreature — Efreet Cumulative upkeep {G} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) 5/4
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