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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
Xenagos, God of Revels 3RGLegendary Enchantment Creature — God Indestructible As long as your devotion to red and green is less than seven, Xenagos isn't a creature. At the beginning of combat on your turn, another target creature you control gains haste and gets +X/+X until end of turn, where X is that creature's power. 6/5
Mirran Mettle GInstant Target creature gets +2/+2 until end of turn. Metalcraft — That creature gets +4/+4 until end of turn instead if you control three or more artifacts.
Obsidian Charmaw 3RRCreature — Dragon This spell costs {1} less to cast for each land your opponents control that could produce {C}. Flying When Obsidian Charmaw enters the battlefield, destroy target nonbasic land an opponent controls. 4/4
Karfell Harbinger 1UCreature — Zombie Wizard {T}: Add {U}. Spend this mana only to foretell a card from your hand or cast an instant or sorcery spell. 1/3
Curious Herd 3GInstant Choose target opponent. You create X 3/3 green Beast creature tokens, where X is the number of artifacts that player controls.
Candlelit Cavalry 4GCreature — Human Knight Coven — At the beginning of combat on your turn, if you control three or more creatures with different powers, Candlelit Cavalry gains trample until end of turn. 5/5
Living Plane 2GGWorld Enchantment All lands are 1/1 creatures that are still lands.
Nature's Revolt 3GGEnchantment All lands are 2/2 creatures that are still lands.
The Celestial Toymaker WUBLegendary Creature — Rogue Artificer Whenever The Celestial Toymaker attacks, look at the top three cards of your library. Exile any number of them in a face-down pile and the rest in a face-up pile. Defending player chooses one of those piles. Put that pile into your hand. At the beginning of each end step, each opponent loses 2 life for each spell or ability that caused one or more players to guess or to group cards or permanents into a pile this turn. 2/4
Horn of Plenty 6Artifact Whenever a player casts a spell, they may pay {1}. If the player does, they draw a card at the beginning of the next end step.
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