My Secrecy. My Advantage. My Guild.
Perhaps the best (or worst) kept secret on Ravnica is the existence of House Dimir. The shadowy network of covert agents who work for the Dimir Guild lurk in the dark corridors of the undercity. The citizens of Ravnica are well aware of the existence of the Dimir, but turn a blind eye to the guild’s activities. The secret services the Dimir offer are the dirty work the other guilds can’t or won’t do, and are provided by small cells of Dimir agents hidden even from one another. These shadowy operatives leave no trace, not only destroying the memories of those who witness their crimes, but also their own memories of their assignments.