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
Court of Cunning 1UUEnchantment When Court of Cunning enters the battlefield, you become the monarch. At the beginning of your upkeep, any number of target players each mill two cards. If you're the monarch, each of those players mills ten cards instead. (To mill a card, a player puts the top card of their library into their graveyard.)
Infuse 2UInstant Untap target artifact, creature, or land. Draw a card at the beginning of the next turn's upkeep.
Chaos Lord 4RRRCreature — Human First strike At the beginning of your upkeep, target opponent gains control of Chaos Lord if the number of permanents is even. Chaos Lord can attack as though it had haste unless it entered the battlefield this turn. 7/7
Alhammarret, High Arbiter 5UULegendary Creature — Sphinx Flying As Alhammarret, High Arbiter enters the battlefield, each opponent reveals their hand. You choose the name of a nonland card revealed this way. Your opponents can't cast spells with the chosen name (as long as this creature is on the battlefield). 5/5
Drifting Djinn 4UUCreature — Djinn Flying At the beginning of your upkeep, sacrifice Drifting Djinn unless you pay {1}{U}. Cycling {2} ({2}, Discard this card: Draw a card.) 5/5
Land Equilibrium 2UUEnchantment If an opponent who controls at least as many lands as you do would put a land onto the battlefield, that player instead puts that land onto the battlefield then sacrifices a land.
Serendib Efreet 2UCreature — Efreet Flying At the beginning of your upkeep, Serendib Efreet deals 1 damage to you. 3/4
Wei Assassins 3BBCreature — Human Soldier Assassin When Wei Assassins enters the battlefield, target opponent chooses a creature they control. Destroy that creature. 3/2
Inquisition of Kozilek BSorcery Target player reveals their hand. You choose a nonland card from it with mana value 3 or less. That player discards that card.
Wolfbitten Captive GCreature — Human Werewolf {1}{G}: Wolfbitten Captive gets +2/+2 until end of turn. Activate only once each turn. At the beginning of each upkeep, if no spells were cast last turn, transform Wolfbitten Captive. 1/1
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