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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
Windrider Eel 3UCreature — Fish Flying Landfall — Whenever a land enters the battlefield under your control, Windrider Eel gets +2/+2 until end of turn. 2/2
Jetsam 4U/BU/BSorcery Each opponent mills three cards, then you may cast a spell from each opponent's graveyard without paying its mana cost. If a spell cast this way would be put into a graveyard, exile it instead.
Traitor's Clutch 4BInstant Target creature gets +1/+0, becomes black, and gains shadow until end of turn. (It can block or be blocked by only creatures with shadow.) Flashback {1}{B} (You may cast this card from your graveyard for its flashback cost. Then exile it.)
Court of Garenbrig 1GGEnchantment When Court of Garenbrig enters the battlefield, you become the monarch. At the beginning of your upkeep, distribute two +1/+1 counters among up to two target creatures. Then if you're the monarch, double the number of +1/+1 counters on each creature you control.
Arcane Endeavor 5UUSorcery Roll two d8 and choose one result. Draw cards equal to that result. Then you may cast an instant or sorcery spell with mana value less than or equal to the other result from your hand without paying its mana cost.
Panoptic Mirror 5Artifact Imprint — {X}, {T}: You may exile an instant or sorcery card with mana value X from your hand. At the beginning of your upkeep, you may copy a card exiled with Panoptic Mirror. If you do, you may cast the copy without paying its mana cost.
Lim-Dûl's Paladin 2BRCreature — Human Knight Trample At the beginning of your upkeep, you may discard a card. If you don't, sacrifice Lim-Dûl's Paladin and draw a card. Whenever Lim-Dûl's Paladin becomes blocked, it gets +6/+3 until end of turn. Whenever Lim-Dûl's Paladin attacks and isn't blocked, it assigns no combat damage this turn and defending player loses 4 life. 0/3
Unshakable Tail 2BCreature — Zombie Detective When Unshakable Tail enters the battlefield and at the beginning of your upkeep, surveil 1. Whenever one or more creature cards are put into your graveyard from your library, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this artifact: Draw a card.") {2}, Sacrifice a Clue: Return Unshakable Tail from your graveyard to your hand. 3/2
Headliner Scarlett 3RLegendary Creature — Human Warlock Haste When Headliner Scarlett enters the battlefield, creatures target player controls can't block this turn. At the beginning of your upkeep, exile the top card of your library face down. You may look at and play that card this turn. 3/3
Ferocification 2REnchantment At the beginning of combat on your turn, choose one — • Target creature you control gets +2/+0 until end of turn. • Target creature you control gains menace and haste until end of turn.
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