Hall of Gemstone [Mirage] Alpha Edition Set: Ravnica: City of Guilds

Set: Ravnica: City of Guilds Type: Land — Island Swamp Rarity: Rare ({T}: Add {U} or {B}

Set: Junior Super Series Type: Land Rarity: Rare At the beginning of the end step

Sacrifice Polluted Delta: Search your library for an Island or Swamp card

Set: Duel Decks: Venser vs

create an X/X colorless Construct artifact creature token

Hall of Gemstone [Mirage] Alpha Edition Set: Ravnica: City of GuildsSet: Mirage Type: World Enchantment Rarity: Rare Cost: {1}{G}{G} 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.