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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
Icy Prison UUEnchantment When Icy Prison enters the battlefield, exile target creature. At the beginning of your upkeep, sacrifice Icy Prison unless any player pays {3}. When Icy Prison leaves the battlefield, return the exiled card to the battlefield under its owner's control.
Force Void 2UInstant Counter target spell unless its controller pays {1}. Draw a card at the beginning of the next turn's upkeep.
Sydri, Galvanic Genius WUBLegendary Creature — Human Artificer {U}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn. {W}{B}: Target artifact creature gains deathtouch and lifelink until end of turn. 2/2
Juggernaut Peddler WBCreature — Human Artificer Vigilance When Juggernaut Peddler enters the battlefield, target player reveals all nonland cards in their hand. You may choose one of those cards. If you do, that player exiles it and conjures a card named Juggernaut into their hand. 2/2
Dream Devourer 1BCreature — Demon Cleric Each nonland card in your hand without foretell has foretell. Its foretell cost is equal to its mana cost reduced by {2}. (During your turn, you may pay {2} and exile it from your hand face down. Cast it on a later turn for its foretell cost.) Whenever you foretell a card, Dream Devourer gets +2/+0 until end of turn. 0/3
Hoof Skulkin 3Artifact Creature — Scarecrow {3}: Target green creature gets +1/+1 until end of turn. 2/2
Subjugator Angel 4WWCreature — Angel Flying When Subjugator Angel enters the battlefield, tap all creatures your opponents control. 4/3
Martial Glory RWInstant Target creature gets +3/+0 until end of turn. Target creature gets +0/+3 until end of turn.
Scarab of the Unseen 2Artifact {T}, Sacrifice Scarab of the Unseen: Return all Auras attached to target permanent you own to their owners' hands. Draw a card at the beginning of the next turn's upkeep.
Mass Mutiny 3RRSorcery For each opponent, gain control of up to one target creature that player controls until end of turn. Untap those creatures. They gain haste until end of turn.
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