"Return to Ravnica" is a Magic: The Gathering expansion set released in 2012. It revisits the city-plane of Ravnica, known for its guilds, each representing a combination of two colors of mana. The set features new mechanics and cards that highlight the interactions and conflicts between these guilds. The storyline centers around the return of the Guildpact, a magical agreement that maintained balance among the guilds. As tensions rise, players can explore the rich lore and diverse gameplay options that come from the unique guild identities, making it a popular set for both casual and competitive players.