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
Assault Suit 4Artifact — Equipment Equipped creature gets +2/+2, has haste, can't attack you or planeswalkers you control, and can't be sacrificed. At the beginning of each opponent's upkeep, you may have that player gain control of equipped creature until end of turn. If you do, untap it. Equip {3}
Ugin's Nexus 5Legendary Artifact If a player would begin an extra turn, that player skips that turn instead. If Ugin's Nexus would be put into a graveyard from the battlefield, instead exile it and take an extra turn after this one.
Othelm, Sigardian Outcast 1GWLegendary Creature — Human {2}, {T}: Choose target creature card in your graveyard that was put there from the battlefield this turn. Return it to the battlefield tapped. Friends forever (You can have two commanders if both have friends forever.) 2/2
Thoughts of Ruin 2RRSorcery Each player sacrifices a land for each card in your hand.
Yawgmoth Demon 4BBCreature — Phyrexian Demon Flying (This creature can't be blocked except by creatures with flying or reach.) First strike (This creature deals combat damage before creatures without first strike.) At the beginning of your upkeep, you may sacrifice an artifact. If you don't, tap Yawgmoth Demon and it deals 2 damage to you. 6/6
Authority 1WSorcery Aftermath (Cast this spell only from your graveyard. Then exile it.) Tap up to two target creatures your opponents control. Creatures you control gain vigilance until end of turn.
Plaza of Harmony Land When Plaza of Harmony enters the battlefield, if you control two or more Gates, you gain 3 life. {T}: Add {C}. {T}: Add one mana of any type that a Gate you control could produce.
Power Taint 1UEnchantment — Aura Enchant enchantment At the beginning of the upkeep of enchanted enchantment's controller, that player loses 2 life unless they pay {2}. Cycling {2} ({2}, Discard this card: Draw a card.)
Hanweir Watchkeep 2RCreature — Human Warrior Werewolf Defender At the beginning of each upkeep, if no spells were cast last turn, transform Hanweir Watchkeep. 1/5
Cache Raiders 3UUCreature — Merfolk Rogue At the beginning of your upkeep, return a permanent you control to its owner's hand. 4/4
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