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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
Sudden Salvation 2WWInstant Choose up to three target permanent cards in graveyards that were put there from the battlefield this turn. Return them to the battlefield tapped under their owners' control. You draw a card for each opponent who controls one or more of those permanents.
Mishra's War Machine 7Artifact Creature — Juggernaut Banding (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding you control are blocking or being blocked by a creature, you divide that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.) At the beginning of your upkeep, Mishra's War Machine deals 3 damage to you unless you discard a card. If Mishra's War Machine deals damage to you this way, tap it. 5/5
Harsh Mentor 1RCreature — Human Cleric Whenever an opponent activates an ability of an artifact, creature, or land on the battlefield, if it isn't a mana ability, Harsh Mentor deals 2 damage to that player. 2/2
Kamahl's Will 3GInstant Choose one. If you control a commander as you cast this spell, you may choose both. • Until end of turn, any number of target lands you control become 1/1 Elemental creatures with vigilance, indestructible, and haste. They're still lands. • Choose target creature you don't control. Each creature you control deals damage equal to its power to that creature.
Tragic Arrogance 3WWSorcery For each player, you choose from among the permanents that player controls an artifact, a creature, an enchantment, and a planeswalker. Then each player sacrifices all other nonland permanents they control.
Season of the Witch BBBEnchantment At the beginning of your upkeep, sacrifice Season of the Witch unless you pay 2 life. At the beginning of the end step, destroy all untapped creatures that didn't attack this turn, except for creatures that couldn't attack.
Citadel of Pain 2REnchantment At the beginning of each player's end step, Citadel of Pain deals X damage to that player, where X is the number of untapped lands they control.
Urza's Incubator 3Artifact As Urza's Incubator enters the battlefield, choose a creature type. Creature spells of the chosen type cost {2} less to cast.
Modular Monstrosity 7Artifact Creature — Construct Whenever an opponent casts a spell, you have five seconds to choose a keyword you haven't chosen for a card named Modular Monstrosity today that's been printed on a creature card. If you do, Modular Monstrosity gains that ability. Otherwise, Modular Monstrosity loses all keyword abilities. 3/3
Guul Draz Overseer 4BBCreature — Vampire Flying Landfall — Whenever a land enters the battlefield under your control, other creatures you control get +1/+0 until end of turn. If that land is a Swamp, those creatures get +2/+0 until end of turn instead. 3/4
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