Gemstone Caverns

If Gemstone Caverns is in your opening hand
and you're not playing first, you may begin
the game with Gemstone Caverns in play with
a luck counter on it. If you do, remove a card
in your hand from the game.
{t}:Add 1 to your mana pool. If Gemstone Caverns has a luck counter on it, instead add
one mana of any color to your mana pool.