History Main / ItOnlyWorksOnce

27th Feb '17 7:42:33 PM Ferot_Dreadnaught
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* In ''Anime/GundamBuildFighters'', the Star Build Strike's Absorb Shield wasn't designed this way, but that tends to be how it works out in practice. As the name implies, the shield opens up and [[EnergyAbsorption absorbs any beam attacks that come its way]], then uses the energy to power some rather impressive {{Limit Break}}s; after its spectacular first use, most of the [[GenreSavvy smarter fighters]] (and this being the World Championship, that meant most of them) realize what's going on and go out of their way to disable the shield first or attack with solid projectiles like missiles that can't be absorbed.

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* In ''Anime/GundamBuildFighters'', the Star Build Strike's Absorb Shield wasn't designed this way, but that tends to be how it works out in practice. As the name implies, the shield opens up and [[EnergyAbsorption absorbs any beam attacks that come its way]], then uses the energy to power some rather impressive {{Limit Break}}s; after its spectacular first use, most of the [[GenreSavvy smarter fighters]] fighters (and this being the World Championship, that meant most of them) realize what's going on and go out of their way to disable the shield first or attack with solid projectiles like missiles that can't be absorbed.



* In an issue of ''Comicbook/UncannyXMen'' ComicBook/{{Rogue}} absorbed ComicBook/{{Nightcrawler}}'s powers and defeated Nimrod, the mutant killing robot from the future, by teleporting a chunk of his body away. The next time the X-Men fought Nimrod, Nightcrawler simply tried the same trick again, only to discover that Nimrod had adapted himself so that not only did it not work but the attempt messed Nightcrawler up quite badly. Thus proving that when it comes to ForgottenPhlebotinum, the line between GenreSavvy and GenreBlindness is whether it works.

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* In an issue of ''Comicbook/UncannyXMen'' ComicBook/{{Rogue}} absorbed ComicBook/{{Nightcrawler}}'s powers and defeated Nimrod, the mutant killing robot from the future, by teleporting a chunk of his body away. The next time the X-Men fought Nimrod, Nightcrawler simply tried the same trick again, only to discover that Nimrod had adapted himself so that not only did it not work but the attempt messed Nightcrawler up quite badly. Thus proving that when it comes to ForgottenPhlebotinum, the line between GenreSavvy and GenreBlindness is whether it works.



*** In Marvel's ComicBook/HeroesReborn arc Doctor Doom had guard robots that had this programmed into them.
* Similar to the Doomsday example above, {{Creator/Marvel|Comics}} villain ComicBook/{{Ultron}} tends to come back whenever he's destroyed, now with immunity to whatever wrecked him the last time.

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*** ** In Marvel's ComicBook/HeroesReborn arc Doctor Doom had guard robots that had this programmed into them.
* Similar to the Doomsday example above, {{Creator/Marvel|Comics}} villain ComicBook/{{Ultron}} tends to come back whenever he's destroyed, now with immunity to whatever wrecked him the last time.
24th Feb '17 5:32:08 PM NumberFortyFour
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* ''Series/iCarly'': In his first episode, Carly, Sam, and Freddie realize that all they really need to do to stop Neville is tattle on him to his mom (since he is only 11). This is handwaved in his next appearance where they mention that his mom is going out of town and will be unreachable for a while. After this, it is never brought up again.

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* ''Series/iCarly'': ''Series/ICarly'': In his first episode, Carly, Sam, and Freddie realize that all they really need to do to stop Neville is tattle on him to his mom (since he is only 11). This is handwaved in his next appearance where they mention that his mom is going out of town and will be unreachable for a while. After this, it is never brought up again.
24th Feb '17 5:30:54 PM NumberFortyFour
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* ''Series/iCarly'': In his first episode, Carly, Sam, and Freddie realize that all they really need to do to stop Neville is tattle on him to his mom (since he is only 11). This is handwaved in his next appearance where they mention that his mom is going out of town and will be unreachable for a while. After this, it is never brought up again.
18th Feb '17 2:08:49 PM sgamer82
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* The final boss of ''VideoGame/{{Undertale}}''[[spoiler:'s Neutral Route empowers himself by absorbing the six human souls the monsters had collected by that point. As the battle progresses, you call for aid and the souls answer, rebelling against the one using them and eventually enabling you to win. This character also possesses a RippleEffectProofMemory of your gameplay, so on subsequent playthroughs, if you reach the Neutral route's final boss again he'll opt not to go through with it since he knows the souls will simply revolt against him again and the end result will be the same]].

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* The final boss of ''VideoGame/{{Undertale}}''[[spoiler:'s ''VideoGame/{{Undertale}}'s'' Neutral Route empowers himself by absorbing [[spoiler:absorbing the six human souls the monsters had collected by that point. point]]. As the battle progresses, you call for aid and the [[spoiler:the souls answer, rebelling against the one using them them]] and eventually enabling you to win. This character also possesses [[spoiler:possesses a RippleEffectProofMemory of your gameplay, gameplay]], so on subsequent playthroughs, if you reach the Neutral route's final boss again he'll opt not to go through with it since he knows the [[spoiler:the souls will simply revolt against him again and the end result will be the same]].
11th Feb '17 5:35:07 PM jormis29
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* The Kido Cannon in the ''{{Manga/Bleach}}'' movie Memories of Nobody burns itself to ash after being fired only once.

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* ''{{Manga/Bleach}}''
**
The Kido Cannon in the ''{{Manga/Bleach}}'' movie Memories of Nobody ''Anime/BleachMemoriesOfNobody'' burns itself to ash after being fired only once.
29th Jan '17 9:06:45 PM billybobfred
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** Burn Up requires the user to be a Fire-type to use, and causes them to stop being Fire-type when used.
27th Jan '17 9:43:18 AM SteveMB
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* A "zero-day" vulnerability is a computer security hole that is not yet generally known, named for the fact that nobody has had time to develop defenses "zero days" after someone discovers and exploits the vulnerability. Once a zero-day exploit is used and noticed, cybersecurity experts will study it and develop countermeasures to be distributed in future security patches.
16th Jan '17 4:08:34 PM merotoker
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* In the final episode of ''Anime/TheBigO'' Roger Smith finally puts some of the pieces of the MythArc together and unlocks the WaveMotionGun built into his mecha just in time to put an end to the BigBad. Wouldn't you know: [[spoiler:He missed, and firing the one shot burns the gun to a crisp.]]

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* In the final episode of ''Anime/TheBigO'' Roger Smith finally puts some of the pieces of the MythArc together and unlocks the WaveMotionGun built into his mecha just in time to put an end to the BigBad. Wouldn't you know: [[spoiler:He missed, and firing the one shot burns the gun to a crisp.]]crisp]].



* [[spoiler:Negi's]] Pactio in ''Manga/MahouSenseiNegima'' allowed use of [[spoiler:all his partner's abilities and Asuna's antimagic (to an extent)]] but was merely used as a tool to keep [[spoiler:Rakan from using his own Pactio.]] And after that, it was ''canceled.'' Obviously for the sake of drama (such a game breaker power) but seriously, you would think something useful like that would be kept around. Although [[spoiler: he could easily regain it by making a Pactio with someone else.]]

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* [[spoiler:Negi's]] Pactio in ''Manga/MahouSenseiNegima'' allowed use of [[spoiler:all his partner's abilities and Asuna's antimagic (to an extent)]] but was merely used as a tool to keep [[spoiler:Rakan from using his own Pactio.]] And after that, it was ''canceled.'' Obviously for the sake of drama (such a game breaker power) but seriously, you would think something useful like that would be kept around. Although [[spoiler: he could easily regain it by making a Pactio with someone else.]]else]].



* An ComicBook/UltimateMarvel comic included [[Comicbook/IronMan Tony Stark]] curing Bruce Banner of Comicbook/TheIncredibleHulk. The catch was that if the Hulk returned even once, its physiology could adapt and the cure would never work again. (See Doomsday, below) Predictably, by the end of the comic they are placed in a situation that requires the return of the Hulk.

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* An ComicBook/UltimateMarvel comic included [[Comicbook/IronMan Tony Stark]] curing Bruce Banner of Comicbook/TheIncredibleHulk.the Comicbook/IncredibleHulk. The catch was that if the Hulk returned even once, its physiology could adapt and the cure would never work again. (See Doomsday, below) Predictably, by the end of the comic they are placed in a situation that requires the return of the Hulk.



* This trope is used as an actual story element in ''{{Comicbook/Runaways}}''. Nico's weapon, the Staff of One, can cast any spell whatsoever but then can never cast it again. (Attempting to repeat a spell results in random effects.) It essentially serves as a leash to her otherwise godlike GreenLanternRing powers. However, it turns out that she can only use each specific spell with ''a specific code word'' once; in a team-up with the Young Avengers, she was able to cast the same spell repeatedly by running through ComicBook/TheVision's language banks.
* In ''Comicbook/PaperinikNewAdventures''' fourteenth issue, a shadow creature can only be destroyed by a weapon created specifically for the job; the heroes, however, didn't have enough time to manufacture more than two charges for the weapon. As Paperinik puts it: "Be careful where you aim, you won't get a third shot."

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* This trope is used as an actual story element in ''{{Comicbook/Runaways}}''. Nico's weapon, the Staff of One, can cast any spell whatsoever but then can never cast it again. (Attempting to repeat a spell results in random effects.) It essentially serves as a leash to her otherwise godlike GreenLanternRing powers. However, it turns out that she can only use each specific spell with ''a specific code word'' once; in a team-up with the Young Avengers, ComicBook/YoungAvengers, she was able to cast the same spell repeatedly by running through ComicBook/TheVision's language banks.
* In ''Comicbook/PaperinikNewAdventures''' ''ComicBook/PaperinikNewAdventures''' fourteenth issue, a shadow creature can only be destroyed by a weapon created specifically for the job; the heroes, however, didn't have enough time to manufacture more than two charges for the weapon. As Paperinik puts it: "Be careful where you aim, you won't get a third shot."



** In an old ''Marvel Team-Up'' issue, BlackPanther concocted a super strong web fluid to hold Stegron, a villain that had previously broken out of Spider-Man's webs. It was stated that the new serum was very unstable, and Black Panther himself warned Spider-Man that it could only be used on this one occasion.

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** In an old ''Marvel Team-Up'' issue, BlackPanther ComicBook/BlackPanther concocted a super strong web fluid to hold Stegron, a villain that had previously broken out of Spider-Man's webs. It was stated that the new serum was very unstable, and Black Panther himself warned Spider-Man that it could only be used on this one occasion.



* In an issue of ''[[Comicbook/{{X-Men}} The Uncanny X-Men]]'' Rogue absorbed Nightcrawler's powers and defeated Nimrod, the mutant killing robot from the future, by teleporting a chunk of his body away. The next time the X-Men fought Nimrod, Nightcrawler simply tried the same trick again, only to discover that Nimrod had adapted himself so that not only did it not work but the attempt messed Nightcrawler up quite badly. Thus proving that when it comes to ForgottenPhlebotinum, the line between GenreSavvy and GenreBlindness is whether it works.

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* In an issue of ''[[Comicbook/{{X-Men}} The Uncanny X-Men]]'' Rogue ''Comicbook/UncannyXMen'' ComicBook/{{Rogue}} absorbed Nightcrawler's ComicBook/{{Nightcrawler}}'s powers and defeated Nimrod, the mutant killing robot from the future, by teleporting a chunk of his body away. The next time the X-Men fought Nimrod, Nightcrawler simply tried the same trick again, only to discover that Nimrod had adapted himself so that not only did it not work but the attempt messed Nightcrawler up quite badly. Thus proving that when it comes to ForgottenPhlebotinum, the line between GenreSavvy and GenreBlindness is whether it works.



* Squirtle in ''FanFic/AshesOfThePast'' [[spoiler: decided to one up Gary's Blastoise and his Mega Evolution and created Squirtlite, a Mega Stone for Squirtles. That's right, ''[[BeyondTheImpossible Squirtle created his own Mega Evolution]]''. However, upon reverting back to normal the Squirtilite explodes in a massive burst of water. [[AvertedTrope Averted]] as Squirtle can simply create another one until he figures out how to stop the Squirtlite from destroying itself after use.]]

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* Squirtle in ''FanFic/AshesOfThePast'' [[spoiler: decided to one up Gary's Blastoise and his Mega Evolution and created Squirtlite, a Mega Stone for Squirtles. That's right, ''[[BeyondTheImpossible Squirtle created his own Mega Evolution]]''. However, upon reverting back to normal the Squirtilite explodes in a massive burst of water. [[AvertedTrope Averted]] as Squirtle can simply create another one until he figures out how to stop the Squirtlite from destroying itself after use.]]use]].



* Creator/RichardDonner's cut of ''Film/SupermanII'' averted this trope by applying the same time travel reset button as the first movie, only in an even stupider way. More to the point, it links the freeing of the Phantom Zone criminals to Superman's use of this in the first movie tying into a warning Jor-El had given him about playing god with time. Superman did it the second time to fix the original mistake.
* ''Film/BackToTheFuturePartIII'': Related to the Liberator Handgun below, Mad Dog has a gun that Only Works Once hidden in his hat [[spoiler:and is foiled when Marty uses a Frisbee Pie Pan to deflect his one and only shot.]]

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* Creator/RichardDonner's cut of ''Film/SupermanII'' averted this trope by applying the same time travel reset button as [[Film/SupermanTheMovie the first movie, movie]], only in an even stupider way. More to the point, it links the freeing of the Phantom Zone criminals to Superman's use of this in the first movie tying into a warning Jor-El had given him about playing god with time. Superman did it the second time to fix the original mistake.
* ''Film/BackToTheFuturePartIII'': Related to the Liberator Handgun below, Mad Dog has a gun that Only Works Once hidden in his hat [[spoiler:and is foiled when Marty uses a Frisbee Pie Pan to deflect his one and only shot.]]shot]].



* Tony's badass [[spoiler:wrist-lasers]] in ''Film/IronMan2''. {{Justified|Trope}} when we see [[spoiler: Tony eject a pair of smoking doohickies from his gauntlets after firing the lasers. The single shot clearly burns the doohickies out, leaving him physically unable to use the weapon again at the time. Since he doesn't grab a new pair of doohickies out of a storage compartment, we can assume that re-readying the lasers requires more than a simple doohicky swap. [[InherentlyFunnyWords Doohicky.]]]]

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* Tony's badass [[spoiler:wrist-lasers]] in ''Film/IronMan2''. {{Justified|Trope}} when we see [[spoiler: Tony eject a pair of smoking doohickies from his gauntlets after firing the lasers. The single shot clearly burns the doohickies out, leaving him physically unable to use the weapon again at the time. Since he doesn't grab a new pair of doohickies out of a storage compartment, we can assume that re-readying the lasers requires more than a simple doohicky swap. [[InherentlyFunnyWords Doohicky.]]]]Doohicky]]]].



* ''Film/PacificRim'': This is actually the main reason [[spoiler:Gypsy Danger's Armsword is used as a secret weapon. The Kaiju are all connected, with information one wave learns during their attacks sent back to the Kaiju leaders while designing the next waves. This allows them to analyze the earth tech and lets them come up with ways to neutralize them.]] It is this, combined with the increased number of attacks, that puts humanity in the bind that it is in by the movie's start.

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* ''Film/PacificRim'': This is actually the main reason [[spoiler:Gypsy Danger's Armsword is used as a secret weapon. The Kaiju are all connected, with information one wave learns during their attacks sent back to the Kaiju leaders while designing the next waves. This allows them to analyze the earth tech and lets them come up with ways to neutralize them.]] them]]. It is this, combined with the increased number of attacks, that puts humanity in the bind that it is in by the movie's start.



* In ''Literature/DragonBones'', the heroes defeat the villains by [[spoiler: killing Oreg, who is sort of a GeniusLoci to castle Hurog, while the villains are inside castle Hurog. The castle collapses.]] This obviously only works once, as [[spoiler: Oreg is no longer bound to the castle, so even after it's rebuilt, it can't be repeated.]]

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* In ''Literature/DragonBones'', the heroes defeat the villains by [[spoiler: killing Oreg, who is sort of a GeniusLoci to castle Hurog, while the villains are inside castle Hurog. The castle collapses.]] collapses]]. This obviously only works once, as [[spoiler: Oreg is no longer bound to the castle, so even after it's rebuilt, it can't be repeated.]] repeated]].



** Subverted in ''Storm From the Shadows'', as the Mesan plan involving New Tuscany is, and is {{Lampshade|Hanging}}d as, a repeat of the plan used in ''Shadow of Saganami.'' However, the second attempt succeeds in its intended goal of [[spoiler:provoking a war between Manticore and the Solarian League]].

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** Subverted in ''Storm From the Shadows'', as the Mesan plan involving New Tuscany is, and is {{Lampshade|Hanging}}d {{lampshade|Hanging}}d as, a repeat of the plan used in ''Shadow of Saganami.'' However, the second attempt succeeds in its intended goal of [[spoiler:provoking a war between Manticore and the Solarian League]].



* This is a matter of some contention among the ''Literature/LordOfTheRings'' fandom, among whom there is a vocal minority that considers Aragorn's use of a seemingly invincible undead army in only one battle (rather than throughout the war) to be a Headscratcher verging on a Wall Banger. Debates about whether the ExactWords of their oath would have allowed him to demand longer service from them can (and have!) gone on for dozens of pages in various internet fora. The popular consensus is that the undead army was not magically compelled to obey Aragorn, but did so voluntarily as he was the only one who could release them to pass on to a more standard afterlife. If they'd gotten it into their heads that he did not intend to release them, they could very well have gone over to the other side, so he decided that it was better to be safe than sorry. YMMV on whether this explanation makes this a legit example of ItOnlyWorksOnce or is merely a convenient bit of FanWank. Regardless, they demanded to be released after a single battle, and he complied.

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* This is a matter of some contention among the ''Literature/LordOfTheRings'' ''Literature/TheLordOfTheRings'' fandom, among whom there is a vocal minority that considers Aragorn's use of a seemingly invincible undead army in only one battle (rather than throughout the war) to be a Headscratcher verging on a Wall Banger. Debates about whether the ExactWords of their oath would have allowed him to demand longer service from them can (and have!) gone on for dozens of pages in various internet fora. The popular consensus is that the undead army was not magically compelled to obey Aragorn, but did so voluntarily as he was the only one who could release them to pass on to a more standard afterlife. If they'd gotten it into their heads that he did not intend to release them, they could very well have gone over to the other side, so he decided that it was better to be safe than sorry. YMMV on whether this explanation makes this a legit example of ItOnlyWorksOnce or is merely a convenient bit of FanWank. Regardless, they demanded to be released after a single battle, and he complied.



* Literature/{{Biggles}} found himself fighting AirPirates targeting bullion shipments in ''Biggles and Co''. The first time they hit his aircraft, he thwarted them with a false floor in the aircraft and some decoy crates full of lead... with some explosives wired to go off when the lid was lifted. The second time it happened, the air pirates immediately went for the secret compartment... And got another load of lead ingots because he'd put the real gold in the main cargo hold. The ''third'' time, the now very annoyed air pirates discovered they'd forced down an unloaded decoy aircraft. [[spoiler: That didn't work quite so well because the air pirates had [[TheMole an inside source]] who'd hidden a smoke bomb in the latest consignment.]]
* In ''RomanceOfTheThreeKingdoms'' Zhuge Liang uses the Empty Fort Strategy, but then claims it to be this. Specifically, he orders his few hundred soldier to dress as civilians and all the city gates to be thrown open. Sima Yi is wary of Zhuge Liang's (entirely fictional) strategic brilliance and assumes it to be a triple bluff as Zhuge Liang's plans never leave his army open to this kind of risk. There are no historical records of this, however. Zhuge Liang's campaigns were poorly planned and executed and Sima Yi didn't know Zhuge Liang's modus operandi well enough for a plan that relied on him knowing it to work.

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* Literature/{{Biggles}} found himself fighting AirPirates {{Sky Pirate}}s targeting bullion shipments in ''Biggles and Co''. The first time they hit his aircraft, he thwarted them with a false floor in the aircraft and some decoy crates full of lead... with some explosives wired to go off when the lid was lifted. The second time it happened, the air pirates immediately went for the secret compartment... And got another load of lead ingots because he'd put the real gold in the main cargo hold. The ''third'' time, the now very annoyed air pirates discovered they'd forced down an unloaded decoy aircraft. [[spoiler: That didn't work quite so well because the air pirates had [[TheMole an inside source]] who'd hidden a smoke bomb in the latest consignment.]]
* In ''RomanceOfTheThreeKingdoms'' ''Literature/RomanceOfTheThreeKingdoms'' Zhuge Liang uses the Empty Fort Strategy, but then claims it to be this. Specifically, he orders his few hundred soldier to dress as civilians and all the city gates to be thrown open. Sima Yi is wary of Zhuge Liang's (entirely fictional) strategic brilliance and assumes it to be a triple bluff as Zhuge Liang's plans never leave his army open to this kind of risk. There are no historical records of this, however. Zhuge Liang's campaigns were poorly planned and executed and Sima Yi didn't know Zhuge Liang's modus operandi well enough for a plan that relied on him knowing it to work.



* In an episode of ''Series/{{Andromeda}}'', the [[NietzscheWannabe Nietzscheans]] are trying to erase the [=AIs=] of captured [[SpaceNavy High Guard]] warships. They have finally created a device that can do that without any physical damage, and manage to delete the AI of the ''Wrath of Achilles''. [[TheCaptain Dylan]] captures the device and keeps it in storage. A year later, a rogue AI named Gabriel hijacks a newly-built sister-ship of the ''Wrath of Achilles'' (''Siege Perilous'' class), and Dylan uses the device again. However, Gabriel has been aware of the device's existence for this whole year ("For an AI, it's an eternity") and has managed to devise a countermeasure. To be fair, though, it would still probably work on any AI not aware of the device's existence.
* ''{{Series/Salem}}'': For some reason, after Mercy's snake familiar is exorcised from her, she's now capable of staying in control of herself after Mary Sibley tries to put it back.

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* In an episode of ''Series/{{Andromeda}}'', the [[NietzscheWannabe [[StrawNihilist Nietzscheans]] are trying to erase the [=AIs=] of captured [[SpaceNavy High Guard]] warships. They have finally created a device that can do that without any physical damage, and manage to delete the AI of the ''Wrath of Achilles''. [[TheCaptain Dylan]] captures the device and keeps it in storage. A year later, a rogue AI named Gabriel hijacks a newly-built sister-ship of the ''Wrath of Achilles'' (''Siege Perilous'' class), and Dylan uses the device again. However, Gabriel has been aware of the device's existence for this whole year ("For an AI, it's an eternity") and has managed to devise a countermeasure. To be fair, though, it would still probably work on any AI not aware of the device's existence.
* ''{{Series/Salem}}'': For some reason, after Mercy's snake familiar {{familiar}} is exorcised from her, she's now capable of staying in control of herself after Mary Sibley tries to put it back.



** For arcane or divine spells, this is justified by encounter and daily spells requiring a minute or two or longer of memorization, preparation, and/or prayer to prepare. For physical powers, it's [[HandWaved explained]] that they are so physically demanding or reliant on surprise tactics that your character can only perform (or get away with them) once. This is one of the main reasons why there's a BrokenBase over this edition: some players find that it's not airtight, but in most cases it works under RuleOfCool; other players find this a ridiculous case of FridgeLogic.

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** For arcane or divine spells, this is justified by encounter and daily spells requiring a minute or two or longer of memorization, preparation, and/or prayer to prepare. For physical powers, it's [[HandWaved [[HandWave explained]] that they are so physically demanding or reliant on surprise tactics that your character can only perform (or get away with them) once. This is one of the main reasons why there's a BrokenBase over this edition: some players find that it's not airtight, but in most cases it works under RuleOfCool; other players find this a ridiculous case of FridgeLogic.



** In ''XCOM: Enemy Within'', there is a scripted event involving an [[AllYourBaseAreBelongToUs alien attack on your base]] (if you lose this mission, it's NonstandardGameOver for you). The means the aliens use to MindControl on some of your techs to get them to sabotage your base defenses is stated to be a one-off.
* The final boss of VideoGame/{{Undertale}}[[spoiler:'s Neutral Route empowers himself by absorbing the six human souls the monsters had collected by that point. As the battle progresses, you call for aid and the souls answer, rebelling against the one using them and eventually enabling you to win. This character also possesses a RippleEffectProofMemory of your gameplay, so on subsequent playthroughs, if you reach the Neutral route's final boss again he'll opt not to go through with it since he knows the souls will simply revolt against him again and the end result will be the same.]]

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** In ''XCOM: Enemy Within'', there is a scripted event involving an [[AllYourBaseAreBelongToUs alien attack on your base]] (if you lose this mission, it's NonstandardGameOver NonStandardGameOver for you). The means the aliens use to MindControl on some of your techs to get them to sabotage your base defenses is stated to be a one-off.
* The final boss of VideoGame/{{Undertale}}[[spoiler:'s ''VideoGame/{{Undertale}}''[[spoiler:'s Neutral Route empowers himself by absorbing the six human souls the monsters had collected by that point. As the battle progresses, you call for aid and the souls answer, rebelling against the one using them and eventually enabling you to win. This character also possesses a RippleEffectProofMemory of your gameplay, so on subsequent playthroughs, if you reach the Neutral route's final boss again he'll opt not to go through with it since he knows the souls will simply revolt against him again and the end result will be the same.]]same]].



''VideoGame/GemsOfWar'': One-Shot * spells, which can only be used once per battle.

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* ''VideoGame/GemsOfWar'': One-Shot * spells, which can only be used once per battle.



* A more straightforward ''WesternAnimation/LooneyTunes'' example would be the WesternAnimation/BugsBunny / WesternAnimation/DaffyDuck cartoon "WesternAnimation/ShowBizBugs" in which he is trying to go one-up on Bugs in their stage act. When none of his tricks impress the audience, he desperately tries his ultimate trick: downing several kinds of volatile explosives and then swallowing a lit match ("Girls...better hold onto your boyfriends!"). The trope title is obviously the punchline to this gag.
** The same gag was also used in "Curtain Razor" with a wolf trying to impress WesternAnimation/PorkyPig (which is a talent impresario in this short) with his act. In the end, the wolf gets his chance after several attempts, then doing the trick aforementioned, and as expected, the same punchline (kinda) is delivered.

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* A more straightforward ''WesternAnimation/LooneyTunes'' example would be the WesternAnimation/BugsBunny / WesternAnimation/DaffyDuck cartoon "WesternAnimation/ShowBizBugs" in which he is trying to go one-up on Bugs in their stage act. When none of his tricks impress the audience, he desperately tries his ultimate trick: downing several kinds of volatile explosives and then swallowing a lit match ("Girls...better hold onto your boyfriends!"). The trope title is obviously the punchline to this gag.
**
gag. The same gag was also used in "Curtain Razor" with a wolf trying to impress WesternAnimation/PorkyPig (which is a talent impresario in this short) with his act. In the end, the wolf gets his chance after several attempts, then doing the trick aforementioned, and as expected, the same punchline (kinda) is delivered.



* Subverted in ''TheSimpsons'' where they try to get Maggie out of a locked bathroom. Homer tries a coat hanger then gives up. Lisa tries to Coat Hanger again, successfully unlocked the door and lampshaded that why they only tried it once anyway.

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* Subverted in ''TheSimpsons'' ''WesternAnimation/TheSimpsons'' where they try to get Maggie out of a locked bathroom. Homer tries a coat hanger then gives up. Lisa tries to Coat Hanger again, successfully unlocked the door and lampshaded that why they only tried it once anyway.



* ''WesternAnimation/TheAdventuresOfPussInBoots'', this is how all magical fountains work. You can only benefit from the effects of a fountain once, and if you say "release" to negate the effects, you don't get a second chance.

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* In ''WesternAnimation/TheAdventuresOfPussInBoots'', this is how all magical fountains work. You can only benefit from the effects of a fountain once, and if you say "release" to negate the effects, you don't get a second chance.
16th Jan '17 1:29:34 PM ErebusElysium
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* The Kairosect from ''WesternAnimation/{{Trollhunters}}'' is an artifact that allows its user to step outside of time, and while it actually only works three times, Blinky wastes the first two uses demonstrating it.
9th Jan '17 6:07:36 AM megarockman
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* In the original ''VideoGame/CommandAndConquer'' game, NOD only had the capability to launch a single nuke (it was a lot more powerful than nukes in the later C&C games though). GDI's counterpart, the Ion Cannon had no such limitations.

to:

* In the original ''VideoGame/CommandAndConquer'' game, series:
** In the [[VideoGame/CommandAndConquerTiberianDawn original game]],
NOD only had the capability to launch a single nuke (it was a lot more powerful than nukes in the later C&C games though). GDI's counterpart, the Ion Cannon had no such limitations.limitations.
** In the ''Yuri's Revenge'' expansion of ''[[VideoGame/CommandAndConquerRedAlert2 Red Alert 2]]'', partway through the fourth Allied mission in Egypt you get one free use of the Psychic Dominator after you rescue Einstein from Yuri's clutches - he managed to sabotage it under Yuri's nose before your forces rescue him. He states it is unstable, though, and will self-destruct before you get a second use.
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