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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
Aggressive Crag Land At the beginning of your combat step, tap Aggressive Crag. {T}: Add {R} or {W}.
Braid of Fire 1REnchantment Cumulative upkeep—Add {R}. (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.)
Claim the Firstborn RSorcery Gain control of target creature with mana value 3 or less until end of turn. Untap that creature. It gains haste until end of turn.
Archive Trap 3UUInstant — Trap If an opponent searched their library this turn, you may pay {0} rather than pay this spell's mana cost. Target opponent mills thirteen cards.
Deeptread Merrow 1UCreature — Merfolk Rogue {U}: Deeptread Merrow gains islandwalk until end of turn. (It can't be blocked as long as defending player controls an Island.) 2/1
The Lady of Otaria 3RGLegendary Creature — Avatar You may tap three untapped Dwarves you control rather than pay this spell's mana cost. At the beginning of each end step, if a land you controlled was put into your graveyard from the battlefield this turn, reveal the top four cards of your library. Put any number of Dwarf cards from among them into your hand. Put the rest on the bottom of your library in a random order. 5/5
Hag of Syphoned Breath 2BCreature — Hag Warlock At the beginning of your upkeep, each opponent loses 2 life and you gain 2 life. 2/2
Imaginary Pet 1UCreature — Illusion At the beginning of your upkeep, if you have a card in hand, return Imaginary Pet to its owner's hand. 4/4
Courageous Resolve 2WInstant Up to one target creature you control gains protection from each of your opponents until end of turn. Draw a card. (It can't be blocked, targeted, dealt damage, enchanted, or equipped by anything controlled by those players.) Fateful hour — If you have 5 or less life, you can't lose life this turn, you can't lose the game this turn, and your opponents can't win the game this turn.
Howling Mine 2Artifact At the beginning of each player's draw step, if Howling Mine is untapped, that player draws an additional card.
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