Gemstone Caverns

The land that pays you for losing the die roll. The player on the draw concedes initiative and a tempo turn for an extra card; this design hands that asymmetry back as a payoff, trading one card from the opening seven for a land already in play and untapped before the opponent takes their first turn. The luck counter is the toll for cheating it out early: pay the card, and the land upgrades from a colorless rock to any-color fixing every turn it stays in play; draw it later off the top and it never gets the counter, staying a plain colorless source. The math is deceptively narrow. The effect only fires from your opening hand, only when you are not the starting player, and only at the cost of going down a card, so it lives in decks where a turn-zero accelerant matters more than the seventh card: combo shells racing to deploy a haymaker, fast-mana piles that want ramp online before their first untap step. Functionally it behaves like a Lotus Petal that sticks around and produces on every untap, except it can only ever appear on the draw and asks you to ante a card for the color fixing. Few lands have ever rewarded the player who lost the play, and fewer still deliver mana a full turn before that player would otherwise have any.