What words refer to being able to divine secrets?

divine, read the signs, foretell the future

What is a person called who can divine secrets?

diviner, fortuneteller, astrologer

What words refer to something showing what will happen in the future?

augur, betoken, bode, forebode, foreshadow, foretell, foretoken, ominous, portend, prefigure, presage,

What methods are used to divine secrets?

interpret dreams, read palms, read tea leaves, read cards, read the stars, consult your horoscope, look into a crystal ball, play with a Ouija board, examine the entrails of an animal