Mana Rocks are special cards in the game of Magic: The Gathering that provide players with additional resources, specifically mana. Mana is essential for casting spells and summoning creatures, allowing players to execute their strategies during gameplay. These rocks typically have a low casting cost and can be tapped for mana of specific colors or generic mana. Players often use Mana Rocks to enhance their decks' efficiency and consistency. By including these cards, they can ensure a steady flow of mana, enabling them to play more powerful spells earlier in the game. Popular examples of Mana Rocks include Sol Ring and Arcane Signet.