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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
Grenzo, Crooked Jailer 4BRLegendary Creature — Goblin Rogue When Grenzo enters the battlefield and at the beginning of your upkeep, heist target opponent's library. Once each turn, you may pay {0} rather than pay the mana cost for a spell you cast that you don't own. 6/4
Orb of Dragonkind 1RArtifact {1}, {T}: Add two mana in any combination of colors. Spend this mana only to cast Dragon spells or activate abilities of Dragons. {R}, {T}, Sacrifice Orb of Dragonkind: Look at the top seven cards of your library. You may reveal a Dragon card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.
Hardy of Myra's Marvels 2GGLegendary Creature — Elf Performer As Hardy of Myra's Marvels enters the battlefield, choose a number. Whenever you cast a spell with the chosen number of lines of flavor text, put that many +1/+1 counters on target creature. Partner (You can have two commanders if both have partner.) 4/4
Restore Balance Sorcery Suspend 6—{W} Each player chooses a number of lands they control equal to the number of lands controlled by the player who controls the fewest, then sacrifices the rest. Players sacrifice creatures and discard cards the same way.
Gerrymandering 2GSorcery Exile all lands. Give each player a number of those cards chosen at random equal to the number of those cards the player controlled. Each player returns those cards to the battlefield under their control.
Hollowborn Barghest 5BBCreature — Demon Dog At the beginning of your upkeep, if you have no cards in hand, each opponent loses 2 life. At the beginning of each opponent's upkeep, if that player has no cards in hand, they lose 2 life. 7/6
Soul Echo XWWEnchantment Soul Echo enters the battlefield with X echo counters on it. You don't lose the game for having 0 or less life. At the beginning of your upkeep, sacrifice Soul Echo if there are no echo counters on it. Otherwise, target opponent may choose that for each 1 damage that would be dealt to you until your next upkeep, you remove an echo counter from Soul Echo instead.
Lydari Elephant 4GCreature — Elephant As Lydari Elephant enters the battlefield, choose two numbers from 3 to 7 at random. Lydari Elephant's power is equal to the first number chosen and its toughness equal to the second number chosen. */*
Dragon Tyrant 8RRCreature — Dragon Flying, trample Double strike (This creature deals both first-strike and regular combat damage.) At the beginning of your upkeep, sacrifice Dragon Tyrant unless you pay {R}{R}{R}{R}. {R}: Dragon Tyrant gets +1/+0 until end of turn. 6/6
Transgress the Mind 1BSorcery Devoid (This card has no color.) Target player reveals their hand. You choose a card from it with mana value 3 or greater and exile that card.
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