| Set: |
World Championship Decks 1998 |
| 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.
![Hall of Gemstone (Brian Selden) (SB) [World Championship Decks 1998] - The Mythic Store | 24h Order Processing](http://themythicstore.com/cdn/shop/files/f0787d43-c2ee-520b-a547-37d76c555ab8_800x.jpg?v=1776841233)
![Hall of Gemstone (Brian Selden) (SB) [World Championship Decks 1998] - The Mythic Store | 24h Order Processing](http://themythicstore.com/cdn/shop/files/f0787d43-c2ee-520b-a547-37d76c555ab8_1024x.jpg?v=1776841233)
