D&D Guildmasters' Guide to Ravnica Maps and Miscellany
D&D Guildmasters' Guide to Ravnica Maps and Miscellany - Rules of Play says:
Finding your way through the eternally vast plane of Ravnica is a daunting task…unless of course you have a map. This pack of maps and additional material will provide players and Dungeon Masters alike with a variety of options for adventure and excitement.