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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
Illusionary Terrain UUEnchantment Cumulative upkeep {2} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.) As Illusionary Terrain enters the battlefield, choose two basic land types. Basic lands of the first chosen type are the second chosen type.
Territorial Hellkite 2RRCreature — Dragon Flying, haste At the beginning of combat on your turn, choose an opponent at random that Territorial Hellkite didn't attack during your last combat. Territorial Hellkite attacks that player this combat if able. If you can't choose an opponent this way, tap Territorial Hellkite. 6/5
Conqueror's Flail 2Artifact — Equipment Equipped creature gets +1/+1 for each color among permanents you control. As long as Conqueror's Flail is attached to a creature, your opponents can't cast spells during your turn. Equip {2}
Selesnya Loft Gardens Plane — Ravnica If an effect would create one or more tokens, it creates twice that many of those tokens instead. If an effect would put one or more counters on a permanent, it puts twice that many of those counters on that permanent instead. Whenever chaos ensues, until end of turn, whenever you tap a land for mana, add one mana of any type that land produced.
A-Lantern of Revealing 3Artifact {T}: Add one mana of any color. {3}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, you may put it on the bottom of your library.
Lantern of Revealing 3Artifact {T}: Add one mana of any color. {4}, {T}: Look at the top card of your library. If it's a land card, you may put it onto the battlefield tapped. If you don't put the card onto the battlefield, you may put it on the bottom of your library.
Haunting Apparition 1UBCreature — Spirit Flying As Haunting Apparition enters the battlefield, choose an opponent. Haunting Apparition's power is equal to 1 plus the number of green creature cards in the chosen player's graveyard. 1+*/2
Archfiend of Depravity 3BBCreature — Demon Flying At the beginning of each opponent's end step, that player chooses up to two creatures they control, then sacrifices the rest. 5/4
Generated Horizons 2GGEnchantment At the beginning of your upkeep, create a Forest land token.
Witch Hunt 4REnchantment Players can't gain life. At the beginning of your upkeep, Witch Hunt deals 4 damage to you. At the beginning of your end step, target opponent chosen at random gains control of Witch Hunt.
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