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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
Cataclysmic Gearhulk 3WWArtifact Creature — Construct Vigilance When Cataclysmic Gearhulk enters the battlefield, each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest. 4/5
Ardenn, Intrepid Archaeologist 2WLegendary Creature — Kor Scout At the beginning of combat on your turn, you may attach any number of Auras and Equipment you control to target permanent or player. Partner (You can have two commanders if both have partner.) 2/2
The Pit Plane — The Abyss When you planeswalk to The Pit, each player creates their choice of a 3/3 white Angel creature token with flying or a 6/6 black Demon creature token with flying, trample, and "At the beginning of your upkeep, sacrifice another creature. If you can't, this creature deals 6 damage to you." Whenever chaos ensues, each player sacrifices a nonartifact creature.
Tragic Slip BInstant Target creature gets -1/-1 until end of turn. Morbid — That creature gets -13/-13 until end of turn instead if a creature died this turn.
Lavinia of the Tenth 3WULegendary Creature — Human Soldier Protection from red When Lavinia of the Tenth enters the battlefield, detain each nonland permanent your opponents control with mana value 4 or less. (Until your next turn, those permanents can't attack or block and their activated abilities can't be activated.) 4/4
Soltari Monk WWCreature — Soltari Monk Cleric Protection from black Shadow (This creature can block or be blocked by only creatures with shadow.) 2/1
Gobsmacked 1WEnchantment — Aura Enchant nonland permanent As Gobsmacked enters the battlefield, choose a person outside the game. As long as you can see the chosen person from your seat, enchanted permanent can't attack or block, and its activated abilities can't be activated.
Blanket of Night 1BBEnchantment Each land is a Swamp in addition to its other land types.
Urborg, Tomb of Yawgmoth Legendary Land Each land is a Swamp in addition to its other land types.
Rampaging Brontodon 5GGCreature — Dinosaur Trample Whenever Rampaging Brontodon attacks, it gets +1/+1 until end of turn for each land you control. 7/7
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