This unidentified individual was one of the four Magicians of the Empire that took part in the Abduction of Nasuada, fighting against the elven spellcasters Blödhgarm, Uthinarë and Yaela during the battle and was the last of the four to die, remaining locked in mental combat with the three elves near Nasuada’s pavilion until he was found by Eragon and Arya after Thorn and Murtagh fled with a captured Nasuada fled.
The remaining magician was kneeling on the ground, his brow pressed against his knees and his arms wrapped around the nape of his neck. Instead of adding his thoughts to the invisible fray, Eragon strode over to the magician, tapped him on the shoulder, and shouted, “Ha!”
The magician quivered, startled, and the distraction allowed the elves to slip past his defenses. This Eragon knew because the man convulsed and then rolled over, the whites of his eyes showing, and a yellowish foam bubbled out of his mouth. Soon afterward, he ceased breathing.