The Chosen Many:The Chosen One, but there's several of them. Alternately, a superpowered individual discovers an organization of similarly-powered individuals.
Externally Validated Prophecy: When a character makes a prediction about the future which is not fulfilled in the work, yet an audience aware of history knows will be fulfilled. In other words, aCall-Forward to real life.
Fainting Seer: An oracle/seer has a dramatic negative reaction to the future they see.
The Fatalist: A character who believes everything that happens is destined to happen and there is no way to escape it
Instant Oracle: Just Add Water!: The Dehydrated Oracle immerses themself nearly or completely in water, and through contact with the liquid is gifted with visions of the future.
Junkie Prophet: A character relies on drug-tripping hallucinations or other trance-induced behaviours to see the future.
Mad Oracle: A character who can see the future, but seems to have terrible mental health.
Magical Seventh Son: Being the seventh son of a seventh son is an omen of supernatural powers or greatness. Often this power is being a seer.
Horrorscope: A character reads something in their horoscope in the news so unbelievably horrifying that they will resort to doing anything or everything to prevent it from coming true.
Loves Me Not: A character does something (usually plucking flower petals) to determine whether someone loves them, alternating between saying the love interest "loves [them]" and "loves [them] not" with each turn.
Magic 8-Ball: A popular toy used for fortune telling.
Magic Mirror: A mirror with magical powers that can do more than reflect one's image.
Magpies as Portents: The association of certain numbers of magpies with good or bad luck, and the rituals for warding the bad luck off.
Misfortune Cookie: The slip of paper in a fortune cookie tells the character something demotivational or otherwise grim. Could serve asForeshadowing.
Red String of Fate: Character knows another character is their soulmate because a plot device (invisible red string, birthmarks, timers, etc.) connects to them.
Screw Destiny: Character decides to go against their written fate.
Threads of Fate: Powerful and supernatural threads that can represent or even wield cosmic forces like destiny and fate, often to the point where cutting one can end a person's life.