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
Sundering Stroke 6RSorcery Sundering Stroke deals 7 damage divided as you choose among one, two, or three targets. If at least seven red mana was spent to cast this spell, instead Sundering Stroke deals 7 damage to each of those permanents and/or players.
Quakebringer 3RRCreature — Giant Berserker Your opponents can't gain life. At the beginning of your upkeep, Quakebringer deals 2 damage to each opponent. This ability triggers only if Quakebringer is on the battlefield or if Quakebringer is in your graveyard and you control a Giant. Foretell {2}{R}{R} 5/4
Raving Dead 4BCreature — Zombie Deathtouch At the beginning of combat on your turn, choose an opponent at random. Raving Dead attacks that player this combat if able. Whenever Raving Dead deals combat damage to a player, that player loses half their life, rounded down. 2/6
Great Defender WInstant Target creature gets +0/+X until end of turn, where X is its mana value.
Crippling Fear 2BBSorcery Choose a creature type. Creatures that aren't of the chosen type get -3/-3 until end of turn.
Fledgling Djinn 1BCreature — Djinn Flying At the beginning of your upkeep, Fledgling Djinn deals 1 damage to you. 2/2
Captain Rex Nebula 1RWLegendary Creature — Human Pilot Employee At the beginning of combat on your turn, choose target nonland permanent you control. Until end of turn, it becomes a Vehicle artifact with base power and toughness each equal to its mana value, and it gains crew 2 and "Crash Land — Whenever this Vehicle deals damage, roll a six-sided die. If the result is equal to this Vehicle's mana value, sacrifice this Vehicle, then it deals that much damage to any target." 2/2
Feedback 2UEnchantment — Aura Enchant enchantment At the beginning of the upkeep of enchanted enchantment's controller, Feedback deals 1 damage to that player.
Psychic Vortex 2UUEnchantment Cumulative upkeep—Draw a card. (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.) At the beginning of your end step, sacrifice a land and discard your hand.
Wake to Slaughter 3BRSorcery Choose up to two target creature cards in your graveyard. An opponent chooses one of them. Return that card to your hand. Return the other to the battlefield under your control. It gains haste. Exile it at the beginning of the next end step. Flashback {4}{B}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
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