κατάρχομαι

From LSJ

δειναὶ δ' ἅμ' ἕπονται κῆρες ἀναπλάκητοι → and after him come dread spirits of death that never miss their mark

Source

English (Autenrieth)

only ipf., in ritualistic sense, χέρνιβά τ' οὐλοχύτᾶς τε, began the sacred hand-washing and sprinkling of barley meal, Od. 3.445†.