Burias had been born and raised in the monastery-prisons of Colchis but only indoctrinated into the Legion during the first great influx of Colchisian Aspirants after the XVIIth Legion's Primarch had learned the truth about the existence of the Chaos Gods during the Pilgrimage of Lorgar and his remembrance of the Old Faith of Colchis. Burias fought under the command of the Dark Apostle Jarulek and later Marduk in the 34th Host, as he was the latter's blood-sworn brother and closest ally. During the Horus Heresy Burias fought at Calth against the Word Bearers' most hated rivals, the Ultramarines Legion. Burias came to be known as Burias Drak'Shal after he willingly joined his soul with that of a daemon named Drak'Shal. Like the Gal Vorbak of old, Burias enjoyed a symbiotic relationship with