Card Codex

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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
Wild Mammoth 2GCreature — Elephant At the beginning of your upkeep, if a player controls more creatures than each other player, the player who controls the most creatures gains control of Wild Mammoth. 3/4
Juxtapose 3USorcery You and target player exchange control of the creature you each control with the highest mana value. Then exchange control of artifacts the same way. If two or more permanents a player controls are tied for highest, their controller chooses one of them.
Malignant Growth 3GUEnchantment Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) At the beginning of your upkeep, put a growth counter on Malignant Growth. At the beginning of each opponent's draw step, that player draws an additional card for each growth counter on Malignant Growth, then Malignant Growth deals damage to the player equal to the number of cards they drew this way.
Blood Clock 4Artifact At the beginning of each player's upkeep, that player returns a permanent they control to its owner's hand unless they pay 2 life.
Old Fogey GGSummon — Dinosaur Phasing, cumulative upkeep {1}, echo {G}{G}, fading 3, bands with other Dinosaurs, protection from Homarids, snow-covered plainswalk, flanking, rampage 2 7/7
Terraformer 2UCreature — Human Wizard {1}: Choose a basic land type. Each land you control becomes that type until end of turn. 2/2
Foreshadow 1UInstant Choose a card name, then target opponent mills a card. If a card with the chosen name was milled this way, you draw a card. Draw a card at the beginning of the next turn's upkeep.
Timber Shredder Creature — Werewolf Trample At the beginning of each upkeep, if a player cast two or more spells last turn, transform Timber Shredder. 4/2
Nightfall Predator Creature — Werewolf {R}, {T}: Nightfall Predator fights target creature. (Each deals damage equal to its power to the other.) At the beginning of each upkeep, if a player cast two or more spells last turn, transform Nightfall Predator. 4/4
Covetous Elegy 4WBSorcery Each player chooses up to two creatures they control, then sacrifices the rest. Then you create a tapped Treasure token for each creature your opponents control.
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