Hall of Gemstone
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.
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Analysis
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Legality
9 formatsB/R history
Rulings
4- 2004-10-04
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.
- 2008-10-01
This has the supertype world. When a world permanent enters, 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 at the same time, they're both put into their owners' graveyards.
- 2016-08-23
Any colorless mana that's produced isn't affected.
Versions
2| Set | No. | Year | Rarity | Artist |
|---|---|---|---|---|
| WC98World Championship Decks 1998 | MX-51204 | 1998 | Rare | David A. Cherry |
| MIRMirage | MX-48824 | 1996 | Rare | David A. Cherry |