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
Extravagant Spirit 3UCreature — Spirit Flying At the beginning of your upkeep, sacrifice Extravagant Spirit unless you pay {1} for each card in your hand. 4/4
Dementia Sliver 3UBCreature — Sliver All Slivers have "{T}: Choose a card name. Target opponent reveals a card at random from their hand. If that card has the chosen name, that player discards it. Activate only during your turn." 3/3
Arcum's Sleigh 1Artifact {2}, {T}: Target creature gains vigilance until end of turn. Activate only during combat and only if defending player controls a snow land.
Visage of Dread 1BArtifact When Visage of Dread enters the battlefield, target opponent reveals their hand. You choose an artifact or creature card from it. That player discards that card. Craft with two creatures {5}{B} ({5}{B}, Exile this artifact, Exile the two from among creatures you control and/or creature cards in your graveyard: Return this card transformed under its owner's control. Craft only as a sorcery.)
Bloodhall Ooze RCreature — Ooze At the beginning of your upkeep, if you control a black permanent, you may put a +1/+1 counter on Bloodhall Ooze. At the beginning of your upkeep, if you control a green permanent, you may put a +1/+1 counter on Bloodhall Ooze. 1/1
Lay Bare the Heart 1BSorcery Target opponent reveals their hand. You choose a nonlegendary, nonland card from it. That player discards that card.
Noggin Whack 2BBTribal Sorcery — Rogue Prowl {1}{B} (You may cast this for its prowl cost if you dealt combat damage to a player this turn with a Rogue.) Target player reveals three cards from their hand. You choose two of them. That player discards those cards.
Kataki, War's Wage 1WLegendary Creature — Spirit All artifacts have "At the beginning of your upkeep, sacrifice this artifact unless you pay {1}." 2/1
Pitiless Horde 2BCreature — Orc Berserker At the beginning of your upkeep, you lose 2 life. Dash {2}{B}{B} (You may cast this spell for its dash cost. If you do, it gains haste, and it's returned from the battlefield to its owner's hand at the beginning of the next end step.) 5/3
Armed and Armored 1WInstant Vehicles you control become artifact creatures until end of turn. Choose a Dwarf you control. Attach any number of Equipment you control to it.
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