Name:Gemstone Mine
ManaCost:no cost
Types:Land
K:etbCounter:MINING:3
A:AB$ Mana | Cost$ T SubCounter<1/MINING> | Produced$ Any | SubAbility$ DBSac | SpellDescription$ Add one mana of any color. If there are no mining counters on CARDNAME, sacrifice it.
SVar:DBSac:DB$ Sacrifice | SacValid$ Self | ConditionPresent$ Card.Self+counters_EQ0_MINING
AI:RemoveDeck:Random
Oracle:Gemstone Mine enters with three mining counters on it.\n{T}, Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.
