τοῖς οἰκείοις βουλεύμασιν ἁλίσκεσθαι → hoist by one's own petard, hoist with one's own petard, hoist on one's own petard, hoisted by one's own petard, be hoist with one's own petard
ter-nox: noctis, f.,
I a threefold night: Herculea, in which Hercules was begotten, Stat. Th. 12, 301.