I think you've already recruited them all to create a Cassian Catholic population of ~3.9 million.
Hearing that Ezbatu is in possession of a city state where there are massive trade opportunities, Avalonia quietly sends traders and merchants through the Argent-Dabo Road -> Caprican-Auria Trade Route -> Romician Roads -> Spice Road (via Spice Road, which is less direct, in order to avoid any fighting between Romicia and Ajakstan) where they set up shop, offering superb glasswork including containers and beads, as well as Avalonian jewelry and other things that require skills which Avalonians have honed for aeons. Copies of books, scrolls, and other mstar fishcripts from far off places translated into local languages are also sold. Fine Avalonian weaponry and armor of steel is sold, where possible, to Romicia, in hopes that they will take full control of more direct routes to Zesoister and improve Avalonian ability to maintain a trading presence there. The entire operation is expensive, but it brings back stuff that Avalonians haven't encountered before including larger quantities of silk, more and different spices, more and more varied foodstuffs and livestock, and even more foreign writings.
This flood of foreign writings prompts the Library of Nazgar to be improved in such a way as to accommodate a larger volume of volumes. The works contained within are temporarily removed while additions and improvements can be made to the ancient structure. This opportunity is used to revisit the works within and to do some categorization and organization of the books and scrolls. It also reveals that some works have deteriorated in quality, and so fresh copies are made based on the originals (kept in a secure, dry, well lit location) and modern information are used to produce fresh copies.
This improvement, it is hoped, will allow the University of Nazgar to be better equipped to educate its students, and also just plain old improve the library.