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
Riddle of Lightning 3RRInstant Choose any target. Scry 3, then reveal the top card of your library. Riddle of Lightning deals damage equal to that card's mana value to that permanent or player.
Smart Ass 2UCreature — Donkey Wizard Whenever Smart Ass attacks, choose a card name. If defending player has no cards with the chosen name in their hand, they may reveal their hand. If they don't reveal their hand, Smart Ass can't be blocked this turn. 2.5/1
Imagecrafter UCreature — Human Wizard {T}: Choose a creature type other than Wall. Target creature becomes that type until end of turn. 1/1
Blood Sun 2REnchantment When Blood Sun enters the battlefield, draw a card. All lands lose all abilities except mana abilities.
Awaken the Maelstrom Sorcery Awaken the Maelstrom is all colors. Target player draws two cards. You may put an artifact card from your hand onto the battlefield. Create a token that's a copy of a permanent you control. Distribute three +1/+1 counters among one, two, or three creatures you control. Destroy target permanent an opponent controls.
Contaminated Ground 1BEnchantment — Aura Enchant land Enchanted land is a Swamp. Whenever enchanted land becomes tapped, its controller loses 2 life.
Revelsong Horn 2Artifact {1}, {T}, Tap an untapped creature you control: Target creature gets +1/+1 until end of turn.
Nature's Will 2GGEnchantment Whenever one or more creatures you control deal combat damage to a player, tap all lands that player controls and untap all lands you control.
Wall of Shards 1WSnow Creature — Wall Defender, flying Cumulative upkeep—An opponent gains 1 life. (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.) 1/8
Fasting WEnchantment At the beginning of your upkeep, put a hunger counter on Fasting. Then destroy Fasting if it has five or more hunger counters on it. If you would begin your draw step, you may skip that step instead. If you do, you gain 2 life. When you draw a card, destroy Fasting.
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