Realm of Chaos

"The bolt struck the Witch King and engulfed him with its energies. No ordinary curse, this magical blast awakened the vengeance of Asuryan that still lingered within Malekith’s soul and had burnt within his breast for nearly five thousand years. The hideous burning of old raged anew through Malekith’s body, searing his flesh and mind. Tormented by the god’s judgement, the Witch King summoned the last of his power and hurled himself into the Realm of Chaos where Asuryan’s vengeance could not follow".

"Having wandered long through the Realm of Chaos, Malekith finally clawed his way back to the world of mortals. A patrol of Dark Riders discovered the Witch King’s broken body in the shadow of the northern watchtowers, his armoured skin rent and tom. Morathi nursed her son for a year, pouring all of her vile magic and malice into his soul that it might see him restored. In the ranting of waking nightmares, the Witch King spoke of bone castles and forests of eyes".
(с) Games Workshop, Dark Elves- 2013