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
Roaring Primadox 3GCreature — Beast At the beginning of your upkeep, return a creature you control to its owner's hand. 4/4
Arcum's Weathervane 2Artifact {2}, {T}: Target snow land is no longer snow. {2}, {T}: Target nonsnow basic land becomes snow.
Pyknite 2GCreature — Ouphe When Pyknite enters the battlefield, draw a card at the beginning of the next turn's upkeep. 1/1
Floodwater Dam 3Artifact {X}{X}{1}, {T}: Tap X target lands.
Mishra's Helix 5Artifact {X}, {T}: Tap X target lands.
Vhal, Candlekeep Researcher 3ULegendary Creature — Human Wizard Vigilance {T}: Add an amount of {C} equal to Vhal, Candlekeep Researcher's toughness. This mana can't be spent to cast spells from your hand. Choose a Background (You can have a Background as a second commander.) 2/3
Bringer of the Green Dawn 7GGCreature — Bringer You may pay {W}{U}{B}{R}{G} rather than pay this spell's mana cost. Trample At the beginning of your upkeep, you may create a 3/3 green Beast creature token. 5/5
Dark Confidant 1BCreature — Human Wizard At the beginning of your upkeep, reveal the top card of your library and put that card into your hand. You lose life equal to its mana value. 2/1
Omen Hawker UCreature — Cephalid Advisor {T}: Add {C}{U}. Spend this mana only to activate abilities. 1/1
Esperzoa 2UArtifact Creature — Jellyfish Flying At the beginning of your upkeep, return an artifact you control to its owner's hand. 4/3
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