The moment his body finally let him fall asleep, his subconscious immediately brought back images of himself, as a demon, where he killed his friends and loved ones, standing atop a mountain made with their corpses.
The nightmares devolved into a bloody battle between him and Khalor, whose army was barely a challenge for him, as the death knight already lay shattered on the ground at his feet.
The necro-drake was entangled with the black dragon Astaroth controlled, and even his other high-level undead were kept at bay by his own summons, as he battled the helpless Khalor.
Calling it a battle wasn't an accurate term, as Astaroth's combat prowess, in this demonic form, far surpassed Khalor's battle ability, and it was over in minutes, as droves of undead lay on the surrounding ground, either shattered, turned to paste or dust, or completely obliterated.
His restless sleep ended as he started fighting Phoenix, when Kary shook him awake as they landed in London.