Arthur was surprised after noticing James' main element was lightning, like Jane. His entire body had thundered, increasing his speed to an astonishing level.
James focused on melee fighting, and his attacks were already fast by nature, and now with a spell enhancing his speed, it went to an entirely new level. He dashed toward Arthur, and the thunders around his body went to his swords, too, increasing their power by adding elemental damage.
Not a single student could see his movements, and even Signy, a rank one mage, was impressed by how fast he was. Sure, speed was not the only thing one needed in a fight, as there were many variables, but a surprise attack with that much speed would surely bring trouble to any mage.
It was not a bad move, and Arthur was sure no student beneath the rank one would be able to avoid it, but in front of him, it was still child's play. Arthur could see James perfectly, and that was without using his Emperor Eye.