mantic,
sibyllic,
vatic,
vatical,
divinatory,
sibylline resembling or characteristic of a prophet or prophecy; "the high priest's divinatory pronouncement"; "mantic powers"; "a kind of sibylline book with ready and infallible answers to questions"
foreboding,
portentous,
fateful of momentous or ominous significance; "such a portentous...monster raised all my curiosity"- Herman Melville; "a prodigious vision"
