Hermione: A portkey is an enchanted object that when touched will transport the one or ones who touch it to anywhere on the globe, decided upon by the enchanter.
Snape: Very good! Now can anyone tell me what foreshadowing is? Yes, Ms. Granger.
Hermione: Foreshadowing is a dramatic device in which an important plot point is mentioned earlier in the story, to return later in a more significant way.
A clue or allusion embedded in the narrative that predicts some later event or revelation. It could be a wayward comment or action, an event that doesn't make sense until later, a Meaningful Name, a rare blood type... so many things can warn us of the future. The foreshadowing may be ominous, or mildly suggestive, or it could merely be obvious in hindsight.
Good foreshadowing doesn't spoil the surprise, yet seems an obvious clue in retrospect. Bad foreshadowing either deflates the suspense or is too obfuscated (such as an Ice-Cream Koan) to predict anything, and capable of being overused. Foreshadowing may establish something to avoid an Ass Pull. Or it may put a viewer off as introducing a needless supernatural element to the story.
In literature, foreshadowing is commonly done when a possibility is mentioned, but almost immediately dismissed or disproved. Some readers will dismiss the suggested possibility just as the unsuspecting characters do. More experienced readers will immediately call the author's bluff and know what to expect.
Dreaming of Things to Come often foreshadows. Chekhov's Gun is often used as a foreshadowing tool. If it makes no sense, it may be Strange Minds Think Alike. If this is done in a Prequel (such as in the page image), it's a Call-Forward.
Two specific variants are Futureshadowing, where the shadowing comes after the actual event chronologically but is still seen before it, and Foreseeing My Death, where a character has foreseen, prophesied or predicted his/her own demise.
When there's only a tiny gap between the foreshadowing and the actual foreshadowed event, that's Five-Second Foreshadowing.
Contrast Plot Point. Compare AND contrast "Funny Aneurysm" Moment (where what was meant as a joke now comes off as an unfortunate foreseeing of a real-life tragedy) and Hilarious in Hindsight (where something becomes funnier or more relevant due to appearing to be prescient to more recent events). Contrast Fauxshadow and Tempting Fate. Production Foreshadowing is this trope's meta version. This Index Will Be Important Later covers foreshadowing tropes. This trope is a good Rewatch Bonus.
Please do not misuse this trope to refer to a series installment having something that appears to reference franchise installments that couldn't have been planned until years after the fact. The more recent event is more likely to be an Internal Homage.
See also Trope Telegraphing.
Naturally, the examples are full of spoilers. Consider yourself warned.
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- Yu-Gi-Oh!: The Infernoid archetype's existence has been mentioned in Qliphort Monolith's flavor text. They're known as the Fire Flood in the OCG text and as the Scourge in the TCG text.
- Qliphort Scout's flavor text explicit mention of Infernoid Tierra (the Infernoid's boss monster) and mentions "C:\sophia\zefra.exe." "Sophia" refers to Sophia, Goddess of Rebith, a monster that can be summoned when you have Ritual, Fusion, Synchro and Xyz. "Zefra" refers to the Zefra archetype released two sets later, which are a Pendulum-based deck that works on bringing out all the summoning methods in a similar vain to Sophia.
- Magic: The Gathering: The Future Sight set, as the name suggests, featured many cards from potential futures of the game, differentiated by a different frame. Many of these cards have since been printed in other sets.
- Notably, the group of Planeswalkers called the Lorwyn Fivenote were originally meant to debut here, but appeared in the next set, Lorwyn, because WotC wanted to take the time to develop the new card type correctly. The five have nothing to do with the story, the cards are just there as, well, this trope.
- A particular note is Ghostfire. Seemingly a red anti-protection spell, it never has technically seen a reprint. It has, however been a major plot point in that it was the key to the lock sealing away the Eldrazi, and the card itself foretells of Ugin, a major figure revealed later.
- Happens with individual cards in other sets, too. For example, Interpret the Signs from Theros block displays the set symbol for Dragons of Tarkir, which was released about a year later.
- Sentinels of the Multiverse: Hints about OblivAeon were popping up from the start: his Aeon Men minions appear in multiple decks getting beaten up, for example, and the "Villainous Weaponry" card in Wagner Mars Base shows Grand Warlord Voss's Scion form, years before the actual set was released and contained Rainek Kel'Voss as the last of OblivAeon's ten Scions.
- Two 1989 Bloom County strips foreshadowed the ending of the strip later that year, in which Bill the Cat with Donald Trump's brain fires all the characters. In the first, Milo says to Binkley that he has been feeling really secure around here and that around Bloom County, he feels a real sense of...permanence. Binkley responds "Dabbling in a little bit of ironic foreshadowing, are we?". In the second, Opus spots a shooting star, and after wondering what to wish for, he then says "I wish I knew if I'll have meaningful employment after August 6th" (August 6th was the day the strip ended).
- A darkly funny one in Gary Larson's The Far Side: Some Natives are bidding farewell to a group of European explorers, when one of them turns to the man just to his right and asks: "Did you detect something ominous in the way they said 'See you later'?"
- Subverted in For Better or for Worse. Elly, discussing her daughter Elizabeth with a policeman, says "I suspect it will be a few more years before she meets Mr. Right!" A caption points out the Meaningful Name on the policeman's office door: "Constable Paul Wright." Paul and Elizabeth do begin a romance within a few weeks after that — but he doesn't turn out to be Elizabeth's Mr. Right and she winds up marrying someone else.
- Discussed in Foxtrot, when one arc focused on Jason and his excitement at the upcoming The Phantom Menace, including his acquiring a poster with the page image.
- "Barkeep, another beer before the shit starts again!" He gets his beer. Later: "Barkeep, another beer before the shit starts again!" The barkeeper doesn't ask. Still later: "Barkeep, another beer before the shit starts again!" Another beer. Midnight. "We're closing! Here, your bill!" "The shit starts again..."
- Daniel Amos's The Alarma Chronicles was a series of four Concept Albums, with an ongoing story (about an apocalyptic vision) in the liner notes linking them together. The first album, ¡Alarma!, has a scene where a one-eyed giant threatens the narrator; the third album, Vox Humana, reveals the giant is a symbol for the dehumanizing effects of the modern world, which serves as that album's major theme. Alarma also has one song, "Shedding the Mortal Coil", written from the perspective of a dying man; the final album, Fearful Symmetry, reveals that the entire series was the narrator's Dying Dream.
- In The Hamilton Mixtape, the conclusion of "Cabinet Battle #3," where Washington's hope that the next generation with find a solution to the slavery problem is punctuated by cannon fire.
- In "Set the Controls For the Heart of the Sun" from A Saucerful of Secrets by Pink Floyd, one line foreshadows The Wall (which came out eleven years after the former album).
"Witness the man who raves at the wall"
- At the beginning of the video for "Holding Out for a Hero" by Bonnie Tyler, the singer asks, "Isn't there a white knight upon a fiery steed?" Minutes later, her question is answered... in the form of a white-clad hero cowboy on a white steed.
- Also, his appearance is portrayed in a picture frame foreshadowing his arrival about a second before she takes it.
- Two moments in Interstitial Actual Play foreshadow the reveal that Roxanne is actually the Nobody of Ennora.
- Near the start of the series the group jokes that Roxanne must be a Nobody because she has an X in her name. This wasn't meant to be foreshadowing, but afterwords Jo and Riley discussed the idea and worked it into the plot.
- When Larxene tells the group what DiZ is doing gathering people like her, she gestures to Roxanne and says "not like you".
- Pili Fantasy: War of Dragons: Lord 100 Years of Statecraft comments with his friend Half-foot Sword that the Tenth Bodhisattva seal isn't necessarily Cast from Hit Points or a lethal Dangerous Forbidden Technique. Someone who can transfer their Chi/breath to another body could survive it, but only one person has mastered that ability, Yin Shih-jen as part of his "liquification" technique, and he has no idea of his ability's "dark side." Same character has, coincidentally, received the manuscript detailing the technique.
- Mata Nui On-Line:
- Numerous hints are made toward the Bohrok Saga, which begins after the game's conclusion:
- One of the prophecies placed under the Great Telescope shows the silhouette of a Bohrok
- A rock in the jungle area has "Wake one and you wake them all", the Bohrok Saga's Tag Line scribbled on it in Bionicle writing.
- Similarly, the message "Beware the swarm" is engraved into one of the rocks in the snowdrifts, which triggers a cutscene about the player having an illusion, during which the text and the Bohrok symbol appear on screen
- When you talk to Turaga Vakama, he says something vague about "expecting the arrival of another...". At the end of the game, he compares the player's (who we then learn is called Takua) adventures to those of the Toa heroes. Takua, two real-life years after the game's story, becomes a Toa himself.
- The Onu-Koro miners talk about hitting an impenetrable rock strata that has organic properties. Seven years later, it's revealed that what they had reached was Mata Nui's face.
- The MNOG II also had a few. When you (this time controlling Hahli) talk to a scholar in Ko-Metru, he says something about her losing her loved one and reuniting the island. These all happen in the Mask of Light movie, which the game was a lead-up to, although Jaller's death was undone by the end.
- Numerous hints are made toward the Bohrok Saga, which begins after the game's conclusion:
- Gavreel's Ex, Terrence can be seen liking Pearl's posts, and in Gavreel's Vidgram photos before he is properly introduced in the story.
- Cairo's Childhood Friend, Wesley, seems a little too enthusiastic about Snape's childhood crush on Lily Potter. If there was any doubt, there a Freeze-Frame Bonus in Episode 12 where you can read "Be With Me" on his shirt while on a call with Cairo.
- In Critters: A New Binge, the Crite leader at one point uses a dog whistle-like device on his fellow Crites to keep them in line, which is also shown to affect the seemingly human Christopher. This foreshadows the fact that Christopher is half-Crite and the missing Crite that the Crites have been sent to Earth to look for.