The Tomes were a starting boost. They were an advantage that people would gain in the Second Realm only.
In the Third Realm, everyone had the same abilities, just with different levels of power.
Naturally, people in the Third Realm could also use their Souls to remotely infuse their surroundings with Ether, but that was also subject to the powers of their Aspects of Power.
Kyle had already known all of that. The only thing he hadn't known was how the Beast Masters actually stored their beasts in such a comparatively small Soul Space.
While Kyle had been listening to Theodor's explanations, the group stopped in front of the gates of the gigantic fortress.
"Only the leaders of each team are allowed to enter the fortress," the Captain said. "Everyone else has to stay outside the base. This is our strongest and most fortified base in the entire Western Front. Due to its significant size, the enemy most likely also knows where it is."