Vector Eagle
The catalogue of Mental Realm techniques the Zu Clan had was expansive almost beyond reason. A single Clan might struggle to have a handful of this caliber of technique, yet the Zu Clan had thousands. No, even tens of thousands on this level.
What surprised Ryu even more was that his analysis was previously was actually wrong. The Zu Clan had plenty of Necromancy techniques and even had some Summoner Necromancer fragmented Legacies.
After thinking a moment, Ryu understood why this was. One had to remember that the reason the Zu Clan fell into decline was precisely because they existed during the Era right before the ban on Mental Realm Masters. This meant that before their downfall, there had yet to be a rift created between them and Necromancers.