宝石鉱山

土地
宝石鉱山は、その上に採掘カウンターが３個置かれた状態で場に出る。
{T}, 宝石鉱山から採掘カウンターを１個取り除く：あなたのマナ・プールに、好きな色１色のマナ１点を加える。 宝石鉱山の上に採掘カウンターが無い場合、それを生け贄に捧げる。
Illus. Brom

Land
Gemstone Mine comes into play with three mining counters on it.
{T}, Remove a mining counter from Gemstone Mine: Add one mana of any color to your mana pool. If there are no mining counters on Gemstone Mine, sacrifice it.¹

Crystal Keep Rulings Summaries

• Sacrificing this card when the last counter is removed is part of the effect of tapping it for mana. [D'Angelo 1999/07/10]
• If the last counter is removed in some way other than by activating its ability, it won't be sacrificed and the ability can no longer be activated. [Time Spiral FAQ 2006/08/30]
• Note - Also see Comes Into Play Abilities, Rule 410.10a.

Format Legality	Legal in Vintage, Legacy, Extended Banned in Standard
Printings (1/16)	Time Spiral Timeshifted (Special)