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
Akuta, Born of Ash 2BBLegendary Creature — Spirit Haste At the beginning of your upkeep, if you have more cards in hand than each opponent, you may sacrifice a Swamp. If you do, return Akuta, Born of Ash from your graveyard to the battlefield. 3/2
Soulfire Eruption 6RRRSorcery Choose any number of target creatures, planeswalkers, and/or players. For each of them, exile the top card of your library, then Soulfire Eruption deals damage equal to that card's mana value to that permanent or player. You may play the exiled cards until the end of your next turn.
Naya Plane — Alara You may play any number of lands on each of your turns. Whenever chaos ensues, target red, green, or white creature you control gets +1/+1 until end of turn for each land you control.
Hungry Hungry Heifer 2GCreature — Cow At the beginning of your upkeep, you may remove a counter from a permanent you control. If you don't, sacrifice Hungry Hungry Heifer. 3/3
Phyrexian Swarmlord 4GGCreature — Phyrexian Insect Horror Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.) At the beginning of your upkeep, create a 1/1 green Phyrexian Insect creature token with infect for each poison counter your opponents have. 4/4
Benthic Djinn 2UBCreature — Djinn Islandwalk (This creature can't be blocked as long as defending player controls an Island.) At the beginning of your upkeep, you lose 2 life. 5/3
Pixie Illusionist UCreature — Faerie Wizard Kicker {3}{G} (You may pay an additional {3}{G} as you cast this spell.) Flying If Pixie Illusionist was kicked, it enters the battlefield with two +1/+1 counters on it. {T}: Target land you control becomes the basic land type of your choice until end of turn. 1/1
Spawn of Mayhem 2BBCreature — Demon Spectacle {1}{B}{B} (You may cast this spell for its spectacle cost rather than its mana cost if an opponent lost life this turn.) Flying, trample At the beginning of your upkeep, Spawn of Mayhem deals 1 damage to each player. Then if you have 10 or less life, put a +1/+1 counter on Spawn of Mayhem. 4/4
Vivien's Stampede 4GGSorcery Each creature you control gains vigilance, trample, and melee until end of turn. (Whenever a creature with melee attacks, it gets +1/+1 until end of turn for each opponent you attacked this combat.) At the beginning of the next main phase this turn, draw a card for each player who was dealt combat damage this turn.
Dinosaur Headdress Artifact — Equipment When Dinosaur Headdress enters the battlefield, attach it to target creature you control. As Dinosaur Headdress becomes attached to a creature, choose an exiled creature card used to craft Dinosaur Headdress. Equipped creature is a copy of the last chosen card. Equip {2}
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