Sibylline

Cleopatra immediately comes down to the chair of state; seizes Ptolemy and drags him out of his seat; then takes his place in the chair. Ftatateeta seats herself on the step of the loggia, and sits there, watching the scene with sybilline intensity.

Source: wiktionary

But directly she had closed the door behind her, Mother Théot's manner underwent a chance. Here the broad light of day appeared to divest her of all her sybilline attributes. She became just an ugly old woman, wrinkled and hook-nosed, dressed in shabby draperies that were grey with age and dirt, and with claw-like hands that looked like the talons of a bird of prey.

Source: wiktionary

Another early form of rhapsodomancy is represented by the sibylline books.

Source: wiktionary

Bitch ov a sibylline vulva / Usurpress and liar / Centuries wept because ov thee / Where art thou now in the hour ov trial?

Source: wiktionary