History Main / InstantAllegianceArtifact

* Downplayed with the One Ring from ''Literature/LordOfTheRings''. While it does corrupt its users and can eventually bend their will to Sauron, the process is far from being instantaneous. Exceptionally strong-willed users can theoretically use the Ring to overthrow Sauron, but the power they would gain from it would [[PowerCorrupts corrupt them as well]].

[[folder:Anime and Manga]]

[[folder:Film]]
* Letting Film/TheGoldenChild touch you will result in you becoming his protector, even if you were ordered to kill him.
* In ''Film/{{The Avengers|2012}}'', Loki is armed with a scepter that allows him to instantly sway Hawkeye, Eric Selvig and a significant number of other involuntary accomplices to his side. All his victims have MindControlEyes that turn bright blue. The scepter [[NoSell won't influence]] Tony Stark due to his arc reactor, though. As revealed in TheStinger and ''Film/AvengersAgeOfUltron'', the scepter was lent to Loki by Thanos and contains one of the Infinity Stones.

* Downplayed with the One Ring from ''Literature/LordOfTheRings''. While it does corrupt its users and can eventually bend their will to Sauron, the process is far from being instantaneous. Exceptionally strong-willed users can theoretically use the Ring to overthrow Sauron, but the power they would gain from it would [[PowerCorrupts corrupt them as well]].
* In ''The Witch's Eye'', from the ''Witch'' series of books, the titular glass-eye seems to make anyone who carries it slowly turn evil. And, much like The One Ring, it also makes it very difficult for the carrier to throw it away.

* A rather odd example is the Horn of Valere, which summons the spirits of heroes bound to the [[Literature/TheWheelOfTime Wheel of Time]] -- who will then fight for whoever blew the Horn, regardless of their allegiance and moral alignment.

* The Caps in ''Literature/TheTripods''.
* In ''Literature/{{Helm}}'', this is one of the uses of the imprinters.
* In ''Literature/RulerOfTheMagicalKeys'', whoever owns a certain thermos gains power over the genie that lives inside.
* As [[ArtifactOfDoom Artifacts of Doom]] created from the darkest of magic, Horcruxes from ''Franchise/HarryPotter'' have a habit of altering the mental state of those that come into contact with them.
** Tom Riddle's Diary from ''Literature/HarryPotterAndTheChamberOfSecrets'' possesses a fragment of Lord Voldemort's soul from back when he was Head Boy of Slytherin House, presumably created with the murder of Moaning Myrtle. [[spoiler:When Ginny uses it for a prolonged period of time, assuming it to be harmless, the fragment of Tom Riddle slowly begins to take possession of her, using her as a temporary vessel to threaten the school with the Basilisk. By the time Harry finds her in the Chamber, Tom Riddle was almost completely taken control with the intent of using her life to revitalize his own.]]
** While looking after Slytherin's Locket in ''Literature/HarryPotterAndTheDeathlyHallows'', Harry, Ron and Hermione take turns wearing the locket as a safety measure so that they are always keeping an eye on it until they figure out how to destroy it. Because of this, it amplifies all of the negative emotions the wearer is feeling as long as they are wearing it, leading to Ron suspecting Harry and Hermione are conspiring against him and abandons them. Interestingly, while Dolores Umbridge wears it, it [[AmplifierArtifact amplifies her magic]] without clouding her mind with negativity. WordOfGod confirms that this is because she is so much of a HateSink all her negative qualities are considered positive ones to her.

[[folder:Live Action TV]]
* From the ''Series/StargateSG1'' movie ''Film/StargateTheArkOfTruth'' the aforementioned ark is speculated as being one of these, with the ability to instantly change someone to the side of truth. [[spoiler:Turns out it's basically programmed to show followers of the Ori that they're wrong, but it's speculated that it could be reprogrammed to make someone believe anything. Apparently the Ancient who created the device had a sense of irony, because the password to activate the Ark is "Origin".]]

* The ''VideoGame/{{Warcraft}}'' series contains the artifact Frostmourne, which sucks out the soul of anyone who uses it and lets them hear the voice of the Lich King, thus equipping them with a lack of conscience and a new master in one stroke.
* ''VideoGame/NetHack'' has a helmet that temporarily causes your alignment to flip. Bizarrely, it doesn't make you ''do'' anything per se--it just causes opposite KarmaMeter scoring. So with some exceptions, you can put the helmet on, do some stuff that normally causes Karma damage, uncurse it off, and it translates as if you've been doing the proper actions. Be careful about sacrifices, though - do the wrong ones, cement your alignment, and you've triggered the one way to make ''[=NetHack=]'' {{Unwinnable}}.

* In ''Webcomic/EerieCuties'', Chloe's mom has the "Doom Panties" locked away. These enhance a [[SuccubiAndIncubi succubus]] power as well as their ExtremeLibido instincts. When Chloe puts them on at too young of an age, she instantly transitions to a full-blown succubus and goes from a nice, nerdy, shy girl to contender for AlphaBitch.

* In ''WesternAnimation/{{Aladdin}}'', The Genie's Lamp is stolen after his fight with Aladdin, and with Jafar now his Master, he's forced to work against Aladdin and grant Jafars wishes, even if he doesnt want too. A similar event happened in ''WesternAnimation/AladdinTheSeries'' when Eden, a female Genie, has her bottle stolen by the episodes villain.
* In ''WesternAnimation/KimPossible'', there was a helmet that flipped people between being a superhero and supervillain.
** Later turned into a laser weapon, causing multiple midfight switches. And of course, it hits [[SuperpoweredEvilSide Ron.]]
* The Ying Yo-Yo and Yang Yo-Yo in ''WesternAnimation/XiaolinShowdown''. If you use one to go into the Ying-Yang world, you come out evil. (A later episode says it just reverses alignment.) Using both nullifies this drawback.

* The [[WesternAnimation/ChallengeOfTheGoBots GoBots]] had a Good/Evil switch of sorts. Why do they even ''have'' that button?
* WesternAnimation/MagiNation has the Allegiance Relic, which can change Shadow Magi good and vice versa, so long as they consent. But even that [[LoopholeAbuse can be overridden with a willingness spell]].

See also TheDarkSideWillMakeYouForget, GettingSmiliesPaintedOnYourSoul, and HypnoTrinket. Compare MirrorMoralityMachine and EnemyExchangeProgram.

-->-- ''WesternAnimation/MyLittlePonyFriendshipIsMagic''

* [[Manga/YakitateJapan Yuuichi Kirisaki's Go-Pan #1]] caused an instant alignment change after consumption.
* In the first season of ''Anime/{{Digimon|Adventure}}'', there were the Black Gears, followed by the Black Rings, Black Spirals, and Dark Spores in ''Anime/DigimonAdventure02''. The first three turned Digimon evil until they could be removed or destroyed, while the Dark Spores [[spoiler:turned ''humans'' evil]].
* In ''Manga/FairyTail'', the ancient magic Nirvana did this, with a slight twist in that it turned villains good as well as turning good people evil. (as long as their emotions were in flux: basically, a good person would turn bad if they were depressed, angered, or otherwise in a negative state, while a bad person would turn good if they were happy, pleased, or otherwise in a positive state.)

* ComicBook/SpiderMan's [[ClingyCostume black symbiote costume]] typically brings out the darker, selfish desires of whoever wears it.
* Many forms of [[GreenRocks kryptonite]] have this effect on Franchise/{{Superman}}.
* The Thinker helmet in ''ComicBook/SuicideSquad''. Grants the wearer technopathy and massive intellect boosts. However, the darker facets of their personalities are left to take the helm.

* [[http://www.scpwiki.com/scp-2140 SCP-2140-1-D]] from the Wiki/SCPFoundation universe was an image that caused anyone who looked at it to instantly turn against the Foundation. It was destroyed after being reverse-engineered into SCP-2140, an image that would cause anyone who looked at it to become loyal to the Foundation.\\\

* In ''Webcomic/EerieCuties'', Chloe's mom has the "Doom Panties" locked away. These enhance a succubus' power as well as their HornyDevil instincts. When Chloe puts them on at too young of an age, she instantly transitions to a full-blown succubus and goes from a nice, nerdy, shy girl to contender for AlphaBitch.

** Downplayed in that while in-universe sources of information may hold this view, the Heroes of the Horn themselves contradict this by stating that they have never been summoned to fight for the side of evil. It is implied that while the Hornsounder can be of any morality, certain conditions must be met to summon the Heroes to battle that make it unlikely that they will ever be summoned by a person with evil intentions.