(n.) One who predicts; a foreteller.

Cassandra Druid astrologer augur calamity howler crystal gazer divinator diviner divineress forecaster foreknower foreseer foreshower foreteller fortuneteller geomancer haruspex palmist prefigurer presager prognosticator prophesier prophet prophet of doom prophetess psychic pythoness religious prophets seer seeress soothsayer vates weather prophet