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
Trinisphere 3Artifact As long as Trinisphere is untapped, each spell that would cost less than three mana to cast costs three mana to cast. (Additional mana in the cost may be paid with any color of mana or colorless mana. For example, a spell that would cost {1}{B} to cast costs {2}{B} to cast instead.)
Mistbind Clique 3UCreature — Faerie Wizard Flash Flying Champion a Faerie (When this enters the battlefield, sacrifice it unless you exile another Faerie you control. When this leaves the battlefield, that card returns to the battlefield.) When a Faerie is championed with Mistbind Clique, tap all lands target player controls. 4/4
Scholarship Sponsor 3WCreature — Human Advisor When Scholarship Sponsor enters the battlefield, each player who controls fewer lands than the player who controls the most lands searches their library for a number of basic land cards less than or equal to the difference, puts those cards onto the battlefield tapped, then shuffles. 3/3
Balancing Act 2WWSorcery Each player chooses a number of permanents they control equal to the number of permanents controlled by the player who controls the fewest, then sacrifices the rest. Each player discards cards the same way.
Streambed Aquitects 1UUCreature — Merfolk Scout {T}: Target Merfolk creature gets +1/+1 and gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.) {T}: Target land becomes an Island until end of turn. 2/3
Iron Maiden 3Artifact At the beginning of each opponent's upkeep, Iron Maiden deals X damage to that player, where X is the number of cards in their hand minus 4.
Fertile Imagination 2GGSorcery Choose a card type. Target opponent reveals their hand. Create two 1/1 green Saproling creature tokens for each card of the chosen type revealed this way. (Artifact, creature, enchantment, instant, land, planeswalker, sorcery, and tribal are card types.)
Plasma Caster 1RArtifact — Equipment Equipped creature gets +1/+1. Whenever equipped creature attacks, you get {E}{E} (two energy counters). Pay {E}{E}: Choose target creature that's blocking equipped creature. Flip a coin. If you win the flip, exile the chosen creature. Otherwise, Plasma Caster deals 1 damage to it. Equip {2}
Sickening Shoal XBBInstant — Arcane You may exile a black card with mana value X from your hand rather than pay this spell's mana cost. Target creature gets -X/-X until end of turn.
Birgi, God of Storytelling 2RLegendary Creature — God Whenever you cast a spell, add {R}. Until end of turn, you don't lose this mana as steps and phases end. Creatures you control can boast twice during each of your turns rather than once. 3/3
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