Hall of Gemstone {1}{G}{G}

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.

Illustrated by David A. Cherry

Part of the Reserved List

Standard
Brawl
Modern
Pauper
Legacy
Penny
Vintage
Duel Cmdr.
Commander
Notes and Rules Information for Hall of Gemstone:
  • Colorless mana added to a player’s mana pool isn’t affected. (2016-08-23)
  • This has the supertype world. When a world permanent enters the battlefield, any world permanents that were already on the battlefield are put into their owners’ graveyards. This is a state-based action called the “world rule.” The new world permanent stays on the battlefield. If two world permanents enter the battlefield at the same time, they’re both put into their owners’ graveyards. (2008-10-01)
  • Although the color may be altered, any restrictions on the use of the mana are not removed. (2004-10-04)
  • Will not affect lands that do not produce mana. (2004-10-04)