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
Monomania 3BBSorcery Target player chooses a card in their hand and discards the rest.
Arcum's Whistle 3Artifact {3}, {T}: Choose target non-Wall creature the active player has controlled continuously since the beginning of the turn. That player may pay {X}, where X is that mana value. If they don't pay, the creature attacks this turn if able, and at the beginning of the next end step, destroy it if it didn't attack this turn. Activate only before attackers are declared.
Nocturno of Myra's Marvels 2BBLegendary Creature — Vampire Performer As Nocturno of Myra's Marvels enters the battlefield, choose a word with five or more letters. Whenever you cast a spell with the chosen word in its rules text, you draw a card and you lose 2 life. Partner (You can have two commanders if both have partner.) 2/2
Outrageous Robbery XBBInstant Target opponent exiles the top X cards of their library face down. You may look at and play those cards for as long as they remain exiled. If you cast a spell this way, you may spend mana as though it were mana of any type to cast it.
Apex Observatory Artifact Apex Observatory enters the battlefield tapped. As it enters, choose a card type shared among two exiled cards used to craft it. {T}: The next spell you cast this turn of the chosen type can be cast without paying its mana cost.
Tezzeret the Schemer 2UBLegendary Planeswalker — Tezzeret [+1]: Create a colorless artifact token named Etherium Cell with "{T}, Sacrifice this artifact: Add one mana of any color." [−2]: Target creature gets +X/-X until end of turn, where X is the number of artifacts you control. [−7]: You get an emblem with "At the beginning of combat on your turn, target artifact you control becomes an artifact creature with base power and toughness 5/5." Loyalty 5
Weed-Pruner Poplar 4BCreature — Treefolk Assassin At the beginning of your upkeep, target creature other than Weed-Pruner Poplar gets -1/-1 until end of turn. 3/3
Formation 1WInstant Target creature gains banding until end of turn. (Any creatures with banding, and up to one without, can attack in a band. Bands are blocked as a group. If any creatures with banding a player controls are blocking or being blocked by a creature, that player divides that creature's combat damage, not its controller, among any of the creatures it's being blocked by or is blocking.) Draw a card at the beginning of the next turn's upkeep.
Mana Geyser 3RRSorcery Add {R} for each tapped land your opponents control.
Canoptek Wraith 3Artifact Creature — Wraith Wraith Form — Canoptek Wraith can't be blocked. Transdimensional Scout — When Canoptek Wraith deals combat damage to a player, you may pay {3} and sacrifice it. If you do, choose a land you control. Then search your library for up to two basic land cards which have the same name as the chosen land, put them onto the battlefield tapped, then shuffle. 2/1
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