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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
Woebringer Demon 3BBCreature — Demon Flying At the beginning of each player's upkeep, that player sacrifices a creature. If the player can't, sacrifice Woebringer Demon. 4/4
V.A.T.S. 2BBInstant Split second (As long as this spell is on the stack, players can't cast spells or activate abilities that aren't mana abilities.) Choose any number of target creatures with equal toughness. Destroy the chosen creatures.
Heartlash Cinder 1RCreature — Elemental Warrior Haste Chroma — When Heartlash Cinder enters the battlefield, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control. 1/1
Liege of the Hollows 2GGCreature — Spirit When Liege of the Hollows dies, each player may pay any amount of mana. Then each player creates a number of 1/1 green Squirrel creature tokens equal to the amount of mana they paid this way. 3/4
Time Machine 5Artifact {T}: Exile Time Machine and target nontoken creature you own. Return them to the battlefield at the beginning of your upkeep on your turn X in the next game you play with one of your opponents in this game, where X is the mana value of the exiled creature.
Katerina of Myra's Marvels 2WWLegendary Creature — Human Performer As Katerina of Myra's Marvels enters the battlefield, choose a letter. Whenever you cast a spell whose name begins with the chosen letter, create a white 2/2 Cat creature token with flying. Partner (You can have two commanders if they both have partner.) 3/3
Encroach BSorcery Target player reveals their hand. You choose a nonbasic land card from it. That player discards that card.
Martial Law 2WWEnchantment At the beginning of your upkeep, detain target creature an opponent controls. (Until your next turn, that creature can't attack or block and its activated abilities can't be activated.)
Nashi, Illusion Gadgeteer 1BGULegendary Creature — Rat Rogue Menace, Ward {2} When Nashi enters the battlefield, secretly choose a card in your graveyard and conjure a duplicate of it into your hand. If the duplicate isn't a land card, it perpetually gains flash. 4/4
Sunken Hope 3UUEnchantment At the beginning of each player's upkeep, that player returns a creature they control to its owner's hand.
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