The twisted biologists of the Simic guild have taken nature into their own hands…and warped it beyond belief. The experiments, especially those with the graft mechanic, have produced creations freakier than any Ravnica has seen before. More detail.

The Rakdos guild goes on killing sprees like most people go on shopping sprees, spreading mayhem across the city for the pure joy of it. As the hellbent mechanic proves, action - frenzied, violent action - is far more important than thought. More detail.

The Azorius guild is the ruling class of Ravnica, and they're not just above the law - they're above everything. As they tangle their foes in bureaucracy and red tape, they soar freely over the city. The forecast ability just makes them more insufferable. More detail.