Chart a Course [The Lost Caverns of Ixalan]

Set: The Lost Caverns of Ixalan Type: Sorcery Rarity: Uncommon Cost: {1}{U} Draw two cards. Then discard a card unless you attacked this turn. As the River Heralds began to decipher the ancient map, they were staggered by the vastness of the world-within-the-world that it revealed.