Gemstone Cavern

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 manna of any color
to your mana pool.