When they saw the giant catapult controlled by the goblins begin charging, the mages stationed on Norman Fortress's first wall promptly activated the defensive magic array on the wall. An invisible magical barrier swiftly enveloped a stretch of wall ten miles long.
This most basic defensive magic array could probably withstand the full-force strike of a Heaven-rank mage or warrior.
When the thunderball atop the giant catapult grew to roughly ten meters in diameter, the stationed mages hastily strengthened the defensive array to the point where it could withstand the all-out attack of a Saint-level mage. After all, a thunderball ten meters in diameter was an attack only a Saint-level mage could produce.
When the thunderball reached twenty meters in diameter and began radiating heart-palpitating magical fluctuations, the stationed mages wisely raised the defensive array's strength to its absolute limit—the level capable of withstanding the full-force attack of a peak Saint Master mage.
This was also the attack limit Norman Fortress's first wall could endure.
If a demigod-level expert appeared, naturally a human expert of the same rank would step forward to fight them. There was no need to rely on the wall's magic arrays to withstand their attacks. Besides, the craftsmanship of the beastmen and other races was what it was. Even the berserk dwarves specialized in killing and arson, having forgotten their ancestors' inherited forging arts completely.
Thus, it was the common understanding among human nations that the other races could not possess overly powerful siege weapons.
In the eyes of Norman Fortress's stationed mages, this catapult, which glimmered faintly with magical radiance all over and occasionally displayed unfamiliar moving magical script, could at most unleash the destructive power of a lower-tier Saint Master, right? This was practically the limit that craftsmen of the other races could achieve.