Ismeri Library

The Ismeri Library of Ravnica is officially a guildless building and open to all citizens, but the place is run exclusively by members of House Dimir. It serves as one of the centers of the guild's communication, with messages magically hidden within the hundreds of thousands of books stored inside, often with one piece of information divided among multiple documents.

In-game references
Referred to:
 * Omnispell Adept