Ravnica Allegiance is the 80th Magic expansion. It was released on January 25, 2019. Officially, it is not part of a block. However, it is part of a series of three that is set on the same world, unofficially called the Guilds of Ravnica block.
Ravnica Allegiance contains 259 cards (111 commons, 80 uncommons, 53 rares, and 15 mythic rares), but there are only 254 functionally different cards since all gates have 2 common slots. Boosters may include randomly inserted premium versions of all cards. This set features five of the bi-colored Ravnican guilds: Azorius ({W}{U}), Rakdos ({B}{R}), Gruul ({R}{G}), Simic ({G}{U}), and Orzhov ({W}{B}). Watermarks are used to better identify the guilds.