Gold One

: Lands you control have, Tap: Add one mana of any color to your mana pool and you lose 2 life.
-1: Exile a card from your hand: Create a Gemstone Mine token with three mining counters on it.
: (Tap: Remove a mining counter from Gemstone Mine: Add one mana of any color. If there are no mining counters on Gemstone Mine, sacrifice it.)