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
Split Decision 1UInstant Will of the council — Choose target instant or sorcery spell. Starting with you, each player votes for denial or duplication. If denial gets more votes, counter the spell. If duplication gets more votes or the vote is tied, copy the spell. You may choose new targets for the copy.
Eldrazi Monument 5Artifact Creatures you control get +1/+1 and have flying and indestructible. At the beginning of your upkeep, sacrifice a creature. If you can't, sacrifice Eldrazi Monument.
Moniker Mage 2UCreature — Human Wizard {U}, Say your middle name: Moniker Mage gains shroud until end of turn. {U}, Say an opponent's middle name: Moniker Mage gains flying until end of turn. 2/2
Jirina, Dauntless General WBLegendary Creature — Human Soldier When Jirina, Dauntless General enters the battlefield, exile target player's graveyard. Sacrifice Jirina: Humans you control gain hexproof and indestructible until end of turn. 2/2
Hair-Strung Koto 6Artifact Tap an untapped creature you control: Target player mills a card.
Safe Haven Land {2}, {T}: Exile target creature you control. At the beginning of your upkeep, you may sacrifice Safe Haven. If you do, return each card exiled with Safe Haven to the battlefield under its owner's control.
Tormentor Exarch 3RCreature — Phyrexian Cleric When Tormentor Exarch enters the battlefield, choose one — • Target creature gets +2/+0 until end of turn. • Target creature gets -0/-2 until end of turn. 2/2
Scrounging Bandar 1GCreature — Cat Monkey Scrounging Bandar enters the battlefield with two +1/+1 counters on it. At the beginning of your upkeep, you may move any number of +1/+1 counters from Scrounging Bandar onto another target creature. 0/0
Anrakyr the Traveller 4BLegendary Artifact Creature — Necron Lord of the Pyrrhian Legions — Whenever Anrakyr the Traveller attacks, you may cast an artifact spell from your hand or graveyard by paying life equal to its mana value rather than paying its mana cost. 4/4
Magical Hacker 1UCreature — Human Gamer {U}: Change the text of target spell or permanent by replacing all instances of + with -, and vice versa, until end of turn. 1/2
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