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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
T-45 Power Armor 2Artifact — Equipment When T-45 Power Armor enters the battlefield, you get {E}{E} (two energy counters). Equipped creature gets +3/+3 and doesn't untap during its controller's untap step. At the beginning of your upkeep, you may pay {E}. If you do, untap equipped creature, then put your choice of a menace, trample, or lifelink counter on it. Equip {3}
Twilight Panther WCreature — Cat Spirit {B}: Twilight Panther gains deathtouch until end of turn. 1/2
Rhystic Study 2UEnchantment Whenever an opponent casts a spell, you may draw a card unless that player pays {1}.
Colossal Growth 1GInstant Kicker {R} (You may pay an additional {R} as you cast this spell.) Target creature gets +3/+3 until end of turn. If this spell was kicked, instead that creature gets +4/+4 and gains trample and haste until end of turn.
Prohibit 1UInstant Kicker {2} (You may pay an additional {2} as you cast this spell.) Counter target spell if its mana value is 2 or less. If this spell was kicked, counter that spell if its mana value is 4 or less instead.
Dauthi Mercenary 2BCreature — Dauthi Knight Mercenary Shadow (This creature can block or be blocked by only creatures with shadow.) {1}{B}: Dauthi Mercenary gets +1/+0 until end of turn. 2/1
Living Breakthrough Enchantment Creature — Moonfolk Flying Whenever you cast a spell, your opponents can't cast spells with the same mana value as that spell until your next turn. 3/3
"Ach! Hans, Run!" 2RRGGEnchantment At the beginning of your upkeep, you may say "Ach! Hans, run! It's the . . ." and the name of a creature card. If you do, search your library for a card with that name, put it onto the battlefield, then shuffle. That creature gains haste. Exile it at the beginning of the next end step.
On the Trail 1GEnchantment Whenever you draw your second card each turn, you may put a land card from your hand onto the battlefield tapped.
Gallifrey Stands 4WULegendary Enchantment When Gallifrey Stands enters the battlefield, return all Doctor cards from your graveyard to your hand. At the beginning of your upkeep, you may put a Doctor creature card from your hand onto the battlefield. Then if you control thirteen or more Doctors, you win the game.
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