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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
Sheltering Prayers WEnchantment Basic lands each player controls have shroud as long as that player controls three or fewer lands. (They can't be the targets of spells or abilities.)
Illusionary Mask 2Artifact {X}: You may choose a creature card in your hand whose mana cost could be paid by some amount of, or all of, the mana you spent on {X}. If you do, you may cast that card face down as a 2/2 creature spell without paying its mana cost. If the creature that spell becomes as it resolves has not been turned face up and would assign or deal damage, be dealt damage, or become tapped, instead it's turned face up and assigns or deals damage, is dealt damage, or becomes tapped. Activate only as a sorcery.
Sabertooth Cobra 2GCreature — Snake Whenever Sabertooth Cobra deals damage to a player, that player gets a poison counter. The player gets another poison counter at the beginning of their next upkeep unless they pay {2} before that step. (A player with ten or more poison counters loses the game.) 2/2
Consuming Tide 2UUSorcery Each player chooses a nonland permanent they control. Return all nonland permanents not chosen this way to their owners' hands. Then you draw a card for each opponent who has more cards in their hand than you.
Magus of the Balance 1WCreature — Human Wizard {4}{W}, {T}, Sacrifice Magus of the Balance: 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 discard cards and sacrifice creatures the same way. 2/2
Mystic Reflection 1UInstant Choose target nonlegendary creature. The next time one or more creatures or planeswalkers enter the battlefield this turn, they enter as copies of the chosen creature. Foretell {U} (During your turn, you may pay {2} and exile this card from your hand face down. Cast it on a later turn for its foretell cost.)
Avatar of Me 2UUCreature — Avatar This spell costs {1} more to cast for each ten years you've been alive. Avatar of Me's power is equal to your height in feet and its toughness is equal to your American shoe size. Round to the nearest ½. Avatar of Me is the color of your eyes. */*
Truth or Consequences 2URSorcery Secret council — Each player secretly votes for truth or consequences, then those votes are revealed. You draw cards equal to the number of truth votes. Then choose an opponent at random. Truth or Consequences deals 3 damage to that player for each consequences vote.
Crumbling Ashes 1BEnchantment At the beginning of your upkeep, destroy target creature with a -1/-1 counter on it.
By Invitation Only 3WWSorcery Choose a number between 0 and 13. Each player sacrifices that many creatures.
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