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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
Urabrask, Heretic Praetor 3RRLegendary Creature — Phyrexian Praetor Haste At the beginning of your upkeep, exile the top card of your library. You may play it this turn. At the beginning of each opponent's upkeep, the next time they would draw a card this turn, instead they exile the top card of their library. They may play it this turn. 4/4
Obelisk of Urd 6Artifact Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for {1} or one mana of that creature's color.) As Obelisk of Urd enters the battlefield, choose a creature type. Creatures you control of the chosen type get +2/+2.
Ring of Xathrid 2Artifact — Equipment {2}: Regenerate equipped creature. (The next time that creature would be destroyed this turn, it isn't. Instead tap it, remove all damage from it, and remove it from combat.) At the beginning of your upkeep, put a +1/+1 counter on equipped creature if it's black. Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
Bond of Discipline 4WSorcery Tap all creatures your opponents control. Creatures you control gain lifelink until end of turn.
Razor Pendulum 4Artifact At the beginning of each player's end step, if that player has 5 or less life, Razor Pendulum deals 2 damage to that player.
Ostracize BSorcery Target opponent reveals their hand. You choose a creature card from it. That player discards that card.
Lapis Orb of Dragonkind 2UArtifact {T}: Add {U}. When you spend this mana to cast a Dragon creature spell, scry 2. (Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.)
Shattered Dreams BSorcery Target opponent reveals their hand. You choose an artifact card from it. That player discards that card.
As Foretold 2UEnchantment At the beginning of your upkeep, put a time counter on As Foretold. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast with mana value X or less, where X is the number of time counters on As Foretold.
Breakneck Rider 1RRCreature — Human Scout Werewolf At the beginning of each upkeep, if no spells were cast last turn, transform Breakneck Rider. 3/3
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