[14] Gavin Sheehan, for Bleeding Cool, wrote "overall, Guildmasters' Guide to Ravnica is a fine addition to 5E, but I also recognize this isn't going to be for everyone.

[...] DM's and players alike should recognize that there are people who love Dungeons & Dragons to death but have zero interest in Magic: The Gathering.

[15] Cameron Kunzelman, for Paste, highlighted that the guilds in Ravnica are defined by a color pair with matching lore.

[16] Alexander Lu, for Comics Beat, reviewed a Booster Bundle for the Guilds of Ravnica set which included items such as ten booster packs, poster art that "features the 'Guilds of Ravnica' key art of a floating city shaped like Magic‘s trademark planeswalker symbol", "insert cards that lay out the game in its most basic terms, and 80 basic land cards".

[...] While perhaps not as explanatory of the rules as a Starter Set, Bundles offered a variety of gameplay tools beyond just cards– making them valuable for someone who needed things like deckboxes and dice.

It also contains some information about the story in of this set, which focuses on a mysterious conspiracy that has begun to sow discord among the guilds of Ravnica.

The guild abilities and card synergies make this a fun expansion to draft in isolation, and to deck build with.