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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
Sarevok, Deathbringer 3BLegendary Creature — Human Knight At the beginning of each player's end step, if no permanents left the battlefield this turn, that player loses X life, where X is Sarevok's power. Choose a Background (You can have a Background as a second commander.) 3/4
Kavu Recluse 2RCreature — Kavu {T}: Target land becomes a Forest until end of turn. 2/2
Earthlink 3BRGEnchantment At the beginning of your upkeep, sacrifice Earthlink unless you pay {2}. Whenever a creature dies, that creature's controller sacrifices a land.
Touch of the Eternal 5WWEnchantment At the beginning of your upkeep, count the number of permanents you control. Your life total becomes that number.
Slimy Kavu 2RCreature — Kavu {T}: Target land becomes a Swamp until end of turn. 2/2
Clocknapper 3UUCreature — Human Spy When Clocknapper enters the battlefield, choose beginning phase, precombat main phase, combat phase, postcombat main phase, or ending phase. Steal that phase from target player during their next turn. (That phase occurs as though it's your turn instead.) 2/2
Riders of Gavony 2WWCreature — Human Knight Vigilance As Riders of Gavony enters the battlefield, choose a creature type. Human creatures you control have protection from creatures of the chosen type. 3/3
Artificer's Hex BEnchantment — Aura Enchant Equipment At the beginning of your upkeep, if enchanted Equipment is attached to a creature, destroy that creature.
Tavern Brawler 2RLegendary Enchantment — Background Commander creatures you own have "At the beginning of your upkeep, exile the top card of your library. This creature gets +X/+0 until end of turn, where X is that card's mana value. You may play that card this turn."
Hokori, Dust Drinker 2WWLegendary Creature — Spirit Lands don't untap during their controllers' untap steps. At the beginning of each player's upkeep, that player untaps a land they control. 2/2
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