For example, the oracle given to Severianus in regard to his invasion of Armenia was one of the autophones. Alexander encouraged him to the invasion by saying: Under your charging spear shall fall Armenians and Parthi;Then you shall fare to Rome and the glorious waters of TiberWearing upon your brow the chaplet studded with sunbeams.

The corona radiata, worn by Augustus, Nero, and the emperors after Caracalla. This passage seems to point to its use (in addition to the laurel wreath?) as one of the triumphal insignia.

Then when that silly Celt, being convinced, made the invasion and ended by getting himself and his army cut to bits by Osroes, Alexander expunged this oracle from his records and inserted another in its place: Better for you that your forces against Armenia march not,Lest some man, like a woman bedight, despatch from his bowstringGrim death, cutting you off from life and enjoyment of sunlight.

The Parthians had been interfering with the succession to the throne in Armenia. Severianus, Roman governor of Cappadocia, entered Armenia with a small force in 161, and was disastrously defeated at Elegeia by Chosroes. Accordin to Dio Cassius (71, 2) the entire force was surrounded an wiped out. See also Lucian, de Hist. Conscrib, 21, 24, 25.