A standard century later, following the Council of Nikaea and the rendering of the Emperor's judgement against the use of psychic abilities, Zharost confronted First Captain Jago Sevatarion, who was in temporary command in place of their absent primarch. Disgusted by what his Legion had become under the Night Haunter's leadership, he demanded some form of judgement against the Legion's Libraria.
In response, Sevatar exiled Zharost and cast him out of the VIIIth Legion.