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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
Breath of Dreams 2UUEnchantment Cumulative upkeep {U} (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.) Green creatures have "Cumulative upkeep {1}."
Temporal Distortion 3UUEnchantment Whenever a creature or land becomes tapped, put an hourglass counter on it. Each permanent with an hourglass counter on it doesn't untap during its controller's untap step. At the beginning of each player's upkeep, remove all hourglass counters from permanents that player controls.
And They Shall Know No Fear 1WInstant Choose a creature type. Creatures you control of the chosen type get +1/+0 and gain indestructible until end of turn.
Hapato's Might 2BInstant Target creature gets +X/+0 until end of turn, where X is a number from 0 to 6 chosen at random.
Frozen Aether 3UEnchantment Artifacts, creatures, and lands your opponents control enter the battlefield tapped.
Kismet 3WEnchantment Artifacts, creatures, and lands your opponents control enter the battlefield tapped.
Stalking Vampire Creature — Vampire At the beginning of your upkeep, you may pay {2}{B}{B}. If you do, transform Stalking Vampire. 5/5
Topplegeist WCreature — Spirit Flying When Topplegeist enters the battlefield, tap target creature an opponent controls. Delirium — At the beginning of each opponent's upkeep, if there are four or more card types among cards in your graveyard, tap target creature that player controls. 1/1
Crypsis 1UInstant Target creature you control gains protection from creatures your opponents control until end of turn. Untap it.
Mist of Stagnation 3UUEnchantment Permanents don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player chooses a permanent for each card in their graveyard, then untaps those permanents.
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