Dwarven Miner

When Dwarven Miner enters the battlefield, put 3 mining counters on it.
{t}, remove a mining counter from Dwarven Miner: add one mana of any color to your mana pool
{3}{r}:Put a mining counter on Dwarven Miner.
"There's always a gemstone to be had. You
just havta know where to strike"