The unglossed headword phrase -- for which Adler cites the unpublished Ambrosian Lexicon (470) -- is not attested in this precise grammatical form elsewhere, but for other forms which might have generated it see e.g. Sophocles, Philoctetes 1324; Euripides, Hippolytus 1025; Pausanias 5.24.9 (a Zeus with this epithet at Olympia); Philostratus, Life of Apollonius of Tyana 1.6 (a 'water of Zeus of Oaths', apparently a carbonated spring, at Tyana).
[1] The entry up to this point is equivalent to a separate entry in Synagoge omicron223 and Photius, Lexicon omicron486 Theodoridis, with "scepter of oaths" as the headword phrase.
[2] This material (for which Adler cites the Lexicon Syntacticum of Codex Laurentianus 59.16) appears designed to illustrate that two verbs related to the adjective o(/rkios ('of/relating to oaths') are construed with the accusative case. It is omitted from some manuscripts and appears in the margin of others. In ms S it is placed after omicron 594.