Pact Magic is a unique system of spellcasting found in the Dungeons & Dragons role-playing game, particularly in the Warlock class. It allows characters to form a pact with a powerful entity, such as a fiend, fey, or great old one, granting them access to special spells and abilities. This system emphasizes the relationship between the Warlock and their patron, influencing the Warlock's powers and choices. In Pact Magic, spell slots are limited but regenerate on a short rest, making it different from traditional spellcasting. Warlocks can choose spells from a specific list and often gain unique features based on their chosen patron, enhancing their versatility and role in the game.