If Gemstone Caverns is in your opening hand and you're not the starting player, you may begin the game with Gemstone Caverns on the battlefield with a luck counter on it. If you do, exile a card from your hand. {T}: Add {C}. If Gemstone Caverns has a luck counter on it, instead add one mana of any color.
NM-Mint - $50.90
Lightly Played - $45.80
Moderately Played - $40.70
Heavily Played - $35.70
Damaged - $25.50
NM-Mint Non English - $50.90
Lightly Played Non English - $45.80
Moderately Played Non English - $40.70
Heavily Played Non English - $35.70
Damaged Non English - $25.50