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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
Tovolar, Dire Overlord 1RGLegendary Creature — Human Werewolf Whenever a Wolf or Werewolf you control deals combat damage to a player, draw a card. At the beginning of your upkeep, if you control three or more Wolves and/or Werewolves, it becomes night. Then transform any number of Human Werewolves you control. Daybound 3/3
Mind Slash 1BBEnchantment {B}, Sacrifice a creature: Target opponent reveals their hand. You choose a card from it. That player discards that card. Activate only as a sorcery.
Trench Behemoth 5UUCreature — Kraken Return a land you control to its owner's hand: Untap Trench Behemoth. It gains hexproof until end of turn. Landfall — Whenever a land enters the battlefield under your control, target creature an opponent controls attacks during its controller's next combat phase if able. 7/7
Kruin Outlaw 1RRCreature — Human Rogue Werewolf First strike At the beginning of each upkeep, if no spells were cast last turn, transform Kruin Outlaw. 2/2
Hive of the Eye Tyrant Land If you control two or more other lands, Hive of the Eye Tyrant enters the battlefield tapped. {T}: Add {B}. {3}{B}: Until end of turn, Hive of the Eye Tyrant becomes a 3/3 black Beholder creature with menace and "Whenever this creature attacks, exile target card from defending player's graveyard." It's still a land.
Souvenir T-Shirt 3Artifact — Equipment Gear Up, sponsored by Wizards of the Coast — As Souvenir T-Shirt enters the battlefield, roll two six-sided dice. For each Magic-branded item you're wearing, roll an additional six-sided die. Choose two of those results. Equipped creature gets +X/+Y, where X is the first chosen result and Y is the second. Equip {4}
Pompeii Plane — Earth When you planeswalk to Pompeii and at the beginning of your upkeep, put an eruption counter on it. Whenever you roll a blank on the planar die, scry 2. Then put an eruption counter on Pompeii. When chaos ensues, Pompeii deals damage to each creature and each player equal to the number of eruption counters on Pompeii. Each player sacrifices a land. Then planeswalk.
Success! WInstant Target creature gets +2/+2 until end of turn. If it's a host or has augment, it gains lifelink until end of turn.
Phyrexian Revoker 2Artifact Creature — Phyrexian Horror As Phyrexian Revoker enters the battlefield, choose a nonland card name. Activated abilities of sources with the chosen name can't be activated. 2/1
Forger's Foundry 2UArtifact {T}: Add {U}. When you spend this mana to cast an instant or sorcery spell with mana value 3 or less, you may exile that spell instead of putting it into its owner's graveyard as it resolves. {3}{U}{U}, {T}: You may cast any number of spells from among cards exiled with Forger's Foundry without paying their mana costs. Activate only as a sorcery.
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