Diviner

n.	1.	One who professes divination; one who pretends to predict events, or to reveal occult things, by supernatural means. The diviners have seen a lie, and have told false dreams; they comfort in vain. - Zech. x. 2.
	2.	A conjecture; a guesser; one who makes out occult things.

Noun

1.

diviner - someone who claims to discover hidden knowledge with the aid of supernatural powers

Cassandra, Comus, Druid, Faust, astrologer, augur, calamity howler, conjurer, crystal gazer, diabolist, divinator, divineress, dowser, forecaster, foreknower, foreseer, foreshower, foreteller, fortuneteller, geomancer, haruspex, miracle-worker, necromancer, palmist, predictor, prefigurer, presager, prognosticator, prophesier, prophet, prophet of doom, prophetess, psychic, pythoness, religious prophets, seer, seeress, soothsayer, sorcerer, thaumaturge, thaumaturgist, theurgist, vates, warlock, water witch, weather prophet, wizard