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{{Status|Silver}}
{{Status|Silver}}
{{Notice/Silver}}
{{Notice/Silver}}
{{Seealso|Project KEYSTONE}}
[[File:HTV Madrigal Artifact.png|250px|thumb|right|A Keystone buried in the caverns on Madrigal.]]
 
[[File:HTV Madrigal Artifact.png|250px|thumb|A Keystone buried in the caverns on Madrigal.]]
A '''Keystone''' is a [[Forerunner]] artifact that holds Forerunner information.{{Ref/Film|Id=Contact|TV|Episode=Contact}}
A '''Keystone''' is a [[Forerunner]] artifact that holds Forerunner information.{{Ref/Film|Id=Contact|TV|Episode=Contact}}


==Overview==
==Overview==
At least one keystone was buried on the planet [[Madrigal]]{{Ref/Reuse|Contact}} with another keystone that went together with it on [[Eridanus II/Silver|Eridanus II]].{{Ref/Reuse|Emergence}} The keystone could display a holographic Forerunner script which led to at least one Halo ring.{{Ref/Film|Id=Unbound|TV|Episode=[[Unbound]]}} Furthermore, the keystone has shown the ability to mass [[electromagnetic pulse|EMP]] and repower UNSC equipment. When touched, the Keystone is able to scan the person who touches it,{{Ref/Reuse|Contact}} and awakened locked memories in [[John-117/Silver|John-117]].{{Ref/Reuse|Unbound}}{{Ref/Reuse|Emergence}} However, each time that John used the keystone it placed a strain on his heart and nervous system.{{Ref/Reuse|Emergence}}
At least one keystone was buried on the planet [[Madrigal]]{{Ref/Reuse|Contact}} with another keystone that went together with it on [[Eridanus II]].{{Ref/Reuse|Emergence}} The keystone could display a holographic Forerunner script which led to at least one Halo ring.{{Ref/Film|Id=Unbound|TV|Episode=[[Unbound]]}} Furthermore, the keystone has shown the ability to mass [[electromagnetic pulse|EMP]] and repower UNSC equipment. When touched, the Keystone is able to scan the person who touches it,{{Ref/Reuse|Contact}} and awakened locked memories in [[John-117/Silver|John-117]].{{Ref/Reuse|Unbound}}{{Ref/Reuse|Emergence}} However, each time that John used the keystone it placed a strain on his heart and nervous system.{{Ref/Reuse|Emergence}}


When the Madrigal keystone was activated and John was put into stasis by [[Cortana/Silver|Cortana]] so that the AI could access it herself, the artifact immediately shut itself down, seemingly needing John to be conscious to work. Later, after removing his [[emotional regulator]], John realized that his altered hormonal state might've been affecting his interactions with the keystone. Following the regulator's removal and the restoration of a normal hormonal state, John's unlocked memories became clearer to him and easier to understand.{{Ref/Reuse|Emergence}} After using the more powerful Eridanus II keystone, the effect on John's memories was stronger with John regaining blocked memories even when he wasn't touching the keystone.{{Ref/Reuse|Solace}}
When the Madrigal keystone was activated and John was put into stasis by [[Cortana/Silver|Cortana]] so that the AI could access it herself, the artifact immediately shut itself down, seemingly needing John to be conscious to work. Later, after removing his [[emotional regulator]], John realized that his altered hormonal state might've been affecting his interactions with the keystone. Following the regulator's removal and the restoration of a normal hormonal state, John's unlocked memories became clearer to him and easier to understand.{{Ref/Reuse|Emergence}}


Doctor [[Catherine Halsey/Silver|Catherine Halsey]] suggested that the Madrigal keystone had its own intelligence given the way that it seemed to either respond to John's needs or anticipate what the situation required when he activated it.{{Ref/Reuse|Homecoming}}
Doctor [[Catherine Halsey/Silver|Catherine Halsey]] suggested that the Madrigal keystone had its own intelligence given the way that it seemed to either respond to John's needs or anticipate what the situation required when he activated it.{{Ref/Reuse|Homecoming}}
Each use by John of the keystones resulted in him becoming sicker and sicker{{Ref/Reuse|Contact}}{{Ref/Reuse|Unbound}}{{Ref/Reuse|Emergence}}{{Ref/Reuse|Reckoning}} to the point that ''[[Condor 325]]'s'' computer read his status as critical. According to [[Makee]], a number of lesser keystones had the same effect on her until she learned not to fight them and to surrender to the visions. When John used the keystone again, he experienced a dangerously accelerated heartrate with Makee, who was in a completely different room, experiencing the same thing. When John followed Makee's advice and didn't fight the visions that the keystone showed him, his condition stabilized and he was transported alongside Makee into a vision of a Halo ring. While this was happening, John and Makee had completely identical bioreadings.{{Ref/Reuse|Solace}}
After John and Makee's combined use of the keystone to see Halo, the nature of their connection shifted to the point that the keystones remained inactive unless they were touching them at the same time. When John approached one keystone, the other one in Makee's possession lit up in response.{{Ref/Film|Id=Onyx|TV|Episode=[[Onyx (TV Series)|Onyx]]}}


==History==
==History==
===Madrigal Keystone===
===Madrigal Keystone===
In [[2552]], the [[Covenant]] launched an [[Operation: DEFIANT GLASS|attack]] on [[Madrigal/Silver|Madrigal]] for the keystone, wiping out a nearby [[Insurrectionist]] outpost. The Spartans of [[Silver Team/Silver|Silver Team]] eliminated the attacking [[Sangheili]] and [[John-117/Silver|John-117]] and [[Kai-125/Silver|Kai-125]] entered the cave where the Covenant had been excavating for the artifact. Upon finding the keystone, John touched it and the artifact reacted to the touch of a [[Reclaimer]], lighting up the entire cave and displaying symbols. It had a surprising effect on John, apparently unlocking some of his sealed memories of his childhood. The artifact's reaction to John was noticed by a surviving Sangheili who managed to escape and report it back to the [[Prophet of Mercy/Silver|Prophet of Mercy]] who had learned of the artifact's location from [[Makee]].{{Ref/Reuse|Contact}}
In [[2552]], the [[Covenant]] launched an [[Attack on Madrigal|attack]] on [[Madrigal]] for the keystone, wiping out a nearby [[Insurrectionist]] outpost. The Spartans of [[Silver Team]] eliminated the attacking [[Sangheili]] and [[John-117/Silver|John-117]] and [[Kai-125]] entered the cave where the Covenant had been excavating for the artifact. Upon finding the keystone, John touched it and the artifact reacted to the touch of a [[Reclaimer]], lighting up the entire cave and displaying symbols. It had a surprising effect on John, apparently unlocking some of his sealed memories of his childhood. The artifact's reaction to John was noticed by a surviving Sangheili who managed to escape and report it back to the [[Prophet of Mercy/Silver|Prophet of Mercy]] who had learned of the artifact's location from [[Makee]].{{Ref/Reuse|Contact}}


Throughout his return trip to [[Reach]], John remained fascinated by the artifact while Dr. [[Catherine Halsey/Silver|Catherine Halsey]] became concerned about its effects on John and his memories. After John rebelled rather than execute [[Kwan Ha]], the UNSC shot down [[Condor 325|his]] [[D80 Condor|Condor]] with an [[electromagnetic pulse]], knocking the artifact loose from its casing in the process. John touched it, causing the symbols to display once again and for John to experience more of his memories. In one of his memories, a young John drew a picture of the artifact for [[John-117's mother|his mother]]. The artifact then let out a pulse that knocked out power to the UNSC base while restoring power to John's Condor, allowing John to escape from Reach with Kwan and the artifact.{{Ref/Reuse|Contact}}
Throughout his return trip to [[Reach]], John remained fascinated by the artifact while Dr. [[Catherine Halsey/Silver|Catherine Halsey]] became concerned about its effects on John and his memories. After John rebelled rather than execute [[Kwan Ha]], the UNSC shot down [[Condor 325|his]] [[D80 Condor|Condor]] with an [[electromagnetic pulse]], knocking the artifact loose from its casing in the process. John touched it, causing the symbols to display once again and for John to experience more of his memories. In one of his memories, a young John drew a picture of the artifact for [[John-117's mother|his mother]]. The artifact then let out a pulse that knocked out power to the UNSC base while restoring power to John's Condor, allowing John to escape from Reach with Kwan and the artifact.{{Ref/Reuse|Contact}}
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John subsequently took the keystone to [[the Rubble]] to seek out [[Soren-066/Silver|Soren's]] help. Soren's touch failed to elicit a reaction from the keystone and he introduced John to [[Reth/Silver|Reth]], a man who had been on one of the Covenant ships and had been tested as a Reclaimer. Like with Soren, the artifact also failed to respond to Reth. When Reth shoved the keystone into John's hand, it triggered a pulse that caused everyone but John great pain and for the symbols to display once again as well as causing John to see more of his childhood memories. John quickly returned the keystone to its box, ending the effects. Reth explained that [[Halo Array|the ring]] that it had displayed when activated was what the Covenant and a door to the end of life as they knew it. Reth confirmed that the ring was a weapon and after John admitted that he could feel the darkness, Reth urged John to destroy the keystone and then himself. However, John then decided to take the artifact back to the UNSC where it was studied by Halsey who described it as being nothing like she'd ever seen before.{{Ref/Reuse|Unbound}}
John subsequently took the keystone to [[the Rubble]] to seek out [[Soren-066/Silver|Soren's]] help. Soren's touch failed to elicit a reaction from the keystone and he introduced John to [[Reth/Silver|Reth]], a man who had been on one of the Covenant ships and had been tested as a Reclaimer. Like with Soren, the artifact also failed to respond to Reth. When Reth shoved the keystone into John's hand, it triggered a pulse that caused everyone but John great pain and for the symbols to display once again as well as causing John to see more of his childhood memories. John quickly returned the keystone to its box, ending the effects. Reth explained that [[Halo Array|the ring]] that it had displayed when activated was what the Covenant and a door to the end of life as they knew it. Reth confirmed that the ring was a weapon and after John admitted that he could feel the darkness, Reth urged John to destroy the keystone and then himself. However, John then decided to take the artifact back to the UNSC where it was studied by Halsey who described it as being nothing like she'd ever seen before.{{Ref/Reuse|Unbound}}


At the same time, on ''[[High Charity/Silver|High Charity]]'', Makee and the three Covenant [[Hierarchs]] listened to the surviving Sangheili warrior's testimony about what he had seen. Alarmed that the Demon had gotten his hands on one of the keystones, Makee decided to pursue it herself.{{Ref/Reuse|Unbound}} Makee attacked the {{UNSCShip|Gladius}} with the help of a [[Lekgolo]] colony, but they failed to get any information from either the crew or the ship's database which was wiped during the attack as per the [[Cole Protocol]].{{Ref/Reuse|Emergence}}
At the same time, on ''[[High Charity]]'', Makee and the three Covenant [[Hierarchs]] listened to the surviving Sangheili warrior's testimony about what he had seen. Alarmed that the Demon had gotten his hands on one of the keystones, Makee decided to pursue it herself.{{Ref/Reuse|Unbound}} Makee attacked the {{UNSCShip|Gladius}} with the help of a [[Lekgolo]] colony, but they failed to get any information from either the crew or the ship's database which was wiped during the attack as per the [[Cole Protocol]].{{Ref/Reuse|Emergence}}


Admiral [[Margaret Parangosky/Silver|Margaret Parangosky]] later told [[Miranda Keyes/Silver|Miranda Keyes]] that results confirmed that the keystone was over 100,000 years old which Miranda was stunned by, calling it pre-human and possibly even pre-Covenant. Miranda noted that the keystone was organic, but with what appeared to be an inherent technology. Parangosky revealed what John had learned about it leading to a weapon somewhere and asked Miranda to lead a team analyzing the artifact to determine what it was, what it did, if it was in fact a part of some kind of a weapon or anything that could give humanity an edge over the Covenant. Parangosky sought to create parallel teams studying in the artifact in order to find a way to be less reliant on Halsey in the future.{{Ref/Film|Id=Emergence|TV|Episode=[[Emergence]]}}
Admiral [[Margaret Parangosky/Silver|Margaret Parangosky]] later told [[Miranda Keyes/Silver|Miranda Keyes]] that results confirmed that the keystone was over 100,000 years old which Miranda was stunned by, calling it pre-human and possibly even pre-Covenant. Miranda noted that the keystone was organic, but with what appeared to be an inherent technology. Parangosky revealed what John had learned about it leading to a weapon somewhere and asked Miranda to lead a team analyzing the artifact to determine what it was, what it did, if it was in fact a part of some kind of a weapon or anything that could give humanity an edge over the Covenant. Parangosky sought to create parallel teams studying in the artifact in order to find a way to be less reliant on Halsey in the future.{{Ref/Film|Id=Emergence|TV|[[Emergence]]}}


Under monitoring by Halsey and [[Adun Saly]], John activated the keystone once again, triggering more of his childhood memories featuring a young John drawing and exploring a glowing cavern. As John reached for something in the memory, Halsey had [[Cortana/Silver|Cortana]] put John into stasis so as to have Cortana access the artifact herself. However, as soon as Cortana shut John down, the keystone deactivated itself and Cortana got no readings from it at all. Halsey had Cortana release John who called this experience with the artifact "different" than the previous times. With Cortana's help, John later attempted to locate the planet from his memories using the [[FLEETCOM Central Database]].{{Ref/Reuse|Emergence}}
Under monitoring by Halsey and [[Adun Saly]], John activated the keystone once again, triggering more of his childhood memories featuring a young John drawing and exploring a glowing cavern. As John reached for something in the memory, Halsey had [[Cortana/Silver|Cortana]] put John into stasis so as to have Cortana access the artifact herself. However, as soon as Cortana shut John down, the keystone deactivated itself and Cortana got no readings from it at all. Halsey had Cortana release John who called this experience with the artifact "different" than the previous times. With Cortana's help, John later attempted to locate the planet from his memories using the [[FLEETCOM Central Database]].{{Ref/Reuse|Emergence}}
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After removing his [[emotional regulator]] and having an epiphany after seeing a dog in the park, John returned to the artifact and had Cortana, with Halsey's consent, override the lock on the room's door. Despite Cortana's warnings that touching the keystone put a strain on his heart and nervous system each time, John activated it once again and unlocked more of his childhood memories which revealed that he drew both the Madrigal keystone and another larger one, showing his mother that the two artifacts went together and that John's father had eventually forced him to bury something against his will. With the added information from his newly-unlocked memories, John identified the planet that the second keystone was on as [[Eridanus II]]. John subsequently explained to Halsey that John had realized that his altered hormonal state from the regulator had been messing with his interactions with the keystone.{{Ref/Reuse|Emergence}}
After removing his [[emotional regulator]] and having an epiphany after seeing a dog in the park, John returned to the artifact and had Cortana, with Halsey's consent, override the lock on the room's door. Despite Cortana's warnings that touching the keystone put a strain on his heart and nervous system each time, John activated it once again and unlocked more of his childhood memories which revealed that he drew both the Madrigal keystone and another larger one, showing his mother that the two artifacts went together and that John's father had eventually forced him to bury something against his will. With the added information from his newly-unlocked memories, John identified the planet that the second keystone was on as [[Eridanus II]]. John subsequently explained to Halsey that John had realized that his altered hormonal state from the regulator had been messing with his interactions with the keystone.{{Ref/Reuse|Emergence}}


While John and Halsey were away searching for the Eridanus II keystone, Miranda tested the Madrigal keystone on [[Silver Team/Silver|Silver Team]], but it failed to react to any of the other Spartans. After discovering that the Spartans knew some of the [[Sangheili (language)/Silver|Sangheili language]] in the process, Miranda enlisted [[Kai-125/Silver|Kai-125]]'s help to translate Makee's message to her ship following the attack on the ''Gladius''. The two translated the word "keystone" which they realized likely meant the artifact and accessed the recording of John first activating the keystone. Miranda and Kai realized that the ring displayed on the activated keystone was the Sacred Ring or Halo that Makee was talking about. Kai agreed to Miranda's request to keep their discovery hidden until Miranda could figure out what it all meant.{{Ref/Reuse|Homecoming}}
While John and Halsey were away searching for the Eridanus II keystone, Keyes tested the Madrigal keystone on [[Silver Team]], but it failed to react to any of the other Spartans. After discovering that the Spartans knew some of the [[Sangheili (language)|Sangheili language]] in the process, Keyes enlisted [[Kai-125]]'s help to translate Makee's message to her ship following the attack on the ''Gladius''. The two translated the word "keystone" which they realized likely meant the artifact and accessed the recording of John first activating the keystone. Keyes and Kai realized that the ring displayed on the activated keystone was the Sacred Ring or Halo that Makee was talking about. Kai agreed to Keyes' request to keep their discovery hidden until Keyes could figure out what it all meant.{{Ref/Reuse|Homecoming}}
 
Makee and a team of Sangheili examined the cavern that had held the keystone with [[Luminary|Luminaries]] in the hopes of finding a trail to lead them to the second keystone. After the Eridanus II keystone let out an energy pulse, the Luminaries picked it up. Touching the spot on the wall where the keystone had resided, Makee saw where the second keystone was.{{Ref/Reuse|Reckoning}}
 
Makee later claimed that she could use the Madrigal keystone to find the Eridanus II artifact which had been stolen by the Covenant. Miranda had suspected that the two keystones were communicating and suggested testing Makee. However, John was unwilling to let Makee go anywhere near the keystone and instead suggested trying to use it to find the other keystone himself since John and Makee were the same. However, Miranda wasn't comfortable testing it on John who was getting sick from using the keystones and she worried that Makee wanted them to kill him off the Covenant's most powerful enemy. Regardless, John insisted upon trying anyways.{{Ref/Reuse|Solace}}
 
Monitored by Miranda and, secretly, Halsey and [[Adun Saly]], John activated the keystone once again which also affected Makee in a different room, causing Makee to collapse and both of them to have an accelerated heartrate and John to start to go into circulatory failure as he experienced a number of his childhood memories. Wanting to see the outcome, Halsey refused to let Cortana shut John down to end the danger to him. Finally, John stabilized as he was transported into a vision alongside Makee into a vision where they were standing on a Halo ring.{{Ref/Reuse|Solace}}
 
Six months later, the Madrigal keystone was in the custody of [[James Ackerson/Silver|James Ackerson]] in the location where he was keeping Halsey prisoner.{{Ref/Reuse|Sword}} Ackerson took it to [[Onyx/Silver|Onyx]] with him.{{Ref/Reuse|Onyx}}
 
When John arrived on Onyx in pursuit of Ackerson and Admiral [[Margaret Parangosky/Silver|Margaret Parangosky]], Cortana made contact with Parangosky using [[Var 'Gatanai]]'s comm system, at the same time appearing to John and warning him that the Covenant was very close to find Halo and he needed to touch the keystone. Cortana led John through the base to the keystone, opening doors for him and locking out ONI forces trying to stop him. As John approached the Madrigal keystone, the Eridanus keystone let up on Var's ship and John and Makee touched the keystones at the same time.{{Ref/Reuse|Onyx}} The pair were sent back into the vision of Halo together where they conversed until Makee came under attack by Covenant forces who became partially visible in the vision as well as the ONI soldiers approaching John. When John let go of the keystone, it released an energy wave that was seen across the planet, saving him from the ONI soldiers sent to kill John. Makee was similarly flung across the deck of Var's [[Var 'Gatanai's ship|ship]].{{Ref/Film|Id=Thermopylae|TV|Episode=[[Thermopylae (TV Series)|Thermopylae]]}}


===Eridanus II Keystone===
===Eridanus II Keystone===
A second, much larger, keystone existed on Eridanus II, one that went with the [[Madrigal]] keystone. It was discovered by [[John-117/Silver|John-117]] as a child while exploring outside of the [[Reach for Life installation]] during a family picnic. When John discovered the keystone, he touched it and the cavern briefly shook before John ran away again.{{Ref/Film|Id=Homecoming|TV|Episode=[[Homecoming (TV Series)|Homecoming]]}} As a result of his experience, John began to repeatedly draw both the Eridanus keystone and the Madrigal one, recognizing that they went together. Eventually, [[John-117's father|John's father]] grew frustrated and forced John to bury his drawings of the keystones outside of [[John-117's childhood home|his home]].{{Ref/Reuse|Emergence}}
A second keystone existed on [[Eridanus II]], one that went with the [[Madrigal]] keystone. It was discovered by [[John-117/Silver|John-117]] as a child while exploring outside of the [[Reach for Life installation]] during a family picnic. When John discovered the keystone, he touched it and the cavern briefly shook before John ran away again.{{Ref/Film|Id=Homecoming|TV|Episode=[[Homecoming (TV Series)|Homecoming]]}} As a result of his experience, John began to repeatedly draw both the Eridanus keystone and the Madrigal one, recognizing that they went together. Eventually, [[John-117's father|John's father]] grew frustrated and forced John to bury his drawings of the keystones outside of [[John-117's childhood home|his home]].{{Ref/Reuse|Emergence}}


In [[2552]], after the adult John touched the Madrigal keystone, his blocked childhood memories surrounding the Eridanus keystone started to be unlocked.{{Ref/Reuse|Contact}}{{Ref/Reuse|Unbound}} John eventually remembered that there was a second artifact on his home planet and located the correct world with [[Cortana/Silver|Cortana's]] help, although Eridanus II was uninhabited by this point and sealed off, most of the population having been wiped out by a plague. John decided to return to Eridanus II in search of the keystone and Dr. [[Catherine Halsey/Silver|Catherine Halsey]] insisted upon going with him. Cortana was able to generate a holographic image of the Eridanus keystone based on John's description for Halsey and [[Adun Saly]].{{Ref/Reuse|Emergence}}
In [[2552]], after the adult John touched the Madrigal keystone, his blocked childhood memories surrounding the Eridanus keystone started to be unlocked.{{Ref/Reuse|Contact}}{{Ref/Reuse|Unbound}} John eventually remembered that there was a second artifact on his home planet and located the correct world with [[Cortana/Silver|Cortana's]] help, although Eridanus II was uninhabited by this point and sealed off, most of the population having been wiped out by a plague. John decided to return to Eridanus II in search of the keystone and Dr. [[Catherine Halsey/Silver|Catherine Halsey]] insisted upon going with him. Cortana was able to generate a holographic image of the Eridanus keystone based on John's description for Halsey and [[Adun Saly]].{{Ref/Reuse|Emergence}}


Outside of his childhood home, John dug up the box containing his drawings of both keystones. With [[Cortana/Silver|Cortana's]] help, John recreated his ruined home, triggering John's memories of finding the artifact as a child. John was then able to use his restored memories to locate the cavern once again where John and Halsey found the keystone.{{Ref/Reuse|Homecoming}}
Outside of his childhood home, John dug up the box containing his drawings of both keystones. With Cortana's help, John recreated his ruined home, triggering John's memories of finding the artifact as a child. John was then able to use his restored memories to locate the cavern once again where John and Halsey found the keystone.{{Ref/Reuse|Homecoming}}
 
The UNSC subsequently had trouble removing the keystone from the rock, causing Halsey to set up a camp nearby and bring in more UNSC personnel to help with the problem. As Halsey and her team struggled to remove the keystone from the rock, Cortana appeared to the watching John and told him that an analysis of its field physics suggested that the energy that it could produce was much stronger than that of the Madrigal keystone which wasn't surprising given its size. However, John didn't respond to her and Cortana watched as Halsey told John that it was a serious safety issue for him and for others and she wanted him to stay away from it until she ran some more tests. While Halsey and [[Adun Saly]] studied the artifact, [[Riz-028/Silver|Riz-028]] readied the UNSC forces for their mission to get it onboard the {{UNSCShip|Pioneer}} before the Covenant could figure out that they were on the planet.{{Ref/Film|Id=Reckoning|TV|Episode=[[Reckoning]]}}
 
As Saly used a laser to try to get through the crystal protecting the keystone, it suddenly let out a massive energy pulse that created a shockwave on the planet's surface and was picked up by the Covenant [[Luminary|Luminaries]] on Madrigal, allowing [[Makee]] to see where it was. As John reentered the cavern, the crystal coating around the keystone shattered, leaving the artifact exposed. Studying the readings on the signal, [[Miranda Keyes/Silver|Miranda Keyes]] determined that the keystone had been communicating with something and theorized that, rather being two halves of the same weapon, it was some other kind of device altogether.{{Ref/Reuse|Reckoning}}
 
Shortly thereafter, seeking answers about his past, John touched the keystone against Cortana's warnings that it could kill him. Reacting to John's touch, the keystone lit up with symbols, recognized him as a [[Reclaimer]] and caused John to remember touching it as a child and his kidnapping by Halsey and being replaced by a [[flash cloning|clone]]. The brief contact with the artifact put a strain on John's body and caused him to briefly collapse.{{Ref/Reuse|Reckoning}} The effects of the Eridanus II keystone on John's hidden memories appeared to be greater than that of the Madrigal keystone as John started regaining more and more of his memories afterwards even without contact with one of the keystones. However, the memory recall was painful for him each time.{{Ref/Reuse|Solace}}
 
Shortly thereafter, the Covenant [[Battle of Eridanus II/Silver|attacked]] in search of the artifact. With the ''Pioneer'' destroyed and the other ships too big to get into the canyon, [[Silver Team/Silver|Silver Team]] were ordered to deliver the keystone to Miranda's [[Condor 472|ship]] and then to the ''[[Endymion II]]'' after the Condor was destroyed. However, after [[Kai-125/Silver|Kai-125]] was injured and surrounded, John abandoned the mission to go to her rescue and Silver Team's [[M12 Warthog|Warthog]] was hit by a crashing Banshee, flinging the keystone loose and causing it to hover. [[Atriox/Silver|Atriox]] emerged from [[Taaku Xur-pattern Spirit|Spirit dropship]], took the keystone and successfully escaped with it to a nearby {{Pattern|Ket|battlecruiser}}.{{Ref/Reuse|Reckoning}}
 
On the trip back to [[Reach/Silver|Reach]], Cortana warned John that he was ill and contact with the Eridanus II keystone had overloaded his system. [[Captain]] [[Jacob Keyes/Silver|Jacob Keyes]] informed John that they had been unable to track the Covenant battlecruiser when it jumped into slipspace over Eridanus II and they had no idea where the Covenant had taken the keystone. Although John blamed himself for its loss, Keyes reassured him that he'd done the right thing and that they would find the keystone again and recover it.{{Ref/Reuse|Solace}}
 
When John later interrogated Makee, she told him that the Eridanus II keystone had been taken to the planet [[Rass Kkhotskha]] in the [[Aspero system]], a holy place for the Covenant. However, Makee had never been there and didn't know how to find it. The UNSC searched the Aspero system for a habitable planet, but they couldn't find any sign of one.{{Ref/Film|Id=Solace|TV|Episode=[[Solace (TV Series)|Solace]]}}
 
Six months later, the Eridanus keystone was being kept in a vault at [[SWORD Base]] on Reach. Makee and [[Var 'Gatanai|the]] [[Arbiter]] [[Raid on SWORD Base|raided]] the base and retrieved the keystone.{{Ref/Film|Id=Sword|TV|Episode=[[Sword (TV Series)|Sword]]}} However, the keystone no longer showed Makee the vision of Halo when she touched it and her attempts to find John only led to her seeing darkness.{{Ref/Reuse|Onyx}}
 
Cortana figured out a way to use the stars in the vision of Halo to determine its location, but it would require John and Makee to touch the keystones together to see it again due to the nature of their connection having shifted. Cortana managed to lead John to the Madrigal keystone on [[Onyx/Silver|Onyx]], the Eridanus keystone let up on Var 'Gatanai's ship in response and John and Makee touched the keystones at the same time.{{Ref/Reuse|Onyx}} The pair were sent back into the vision of Halo together where they conversed until Makee came under attack by Covenant forces who became partially visible in the vision as well as the ONI soldiers approaching John. When John let go of the keystone, it released an energy wave that was seen across the planet, saving him from the ONI soldiers sent to kill John. Makee was similarly flung across the deck of Var's [[Var 'Gatanai's ship|ship]]. Afterwards, Makee was able to pinpoint the location of [[Installation 04]] on Cortana's star map using the stars that she saw in the vision.{{Ref/Reuse|Thermopylae}}
 
When John boarded Var's ship in order to rescue Cortana, he found the smashed device that had contained her sitting on the floor in front of the Eridanus keystone which had been abandoned by Var and Makee along with their ship. It's unknown if the keystone survived the ship's crash into Halo.{{Ref/Film|Id=Halo|TV|Episode=[[Halo (TV Series)|Halo]]}}
 
===Lesser Keystones===
During [[Makee]]'s time with the [[Covenant]], they located and brought a number of lesser keystones to her and forced them into Makee's hands. The keystones showed Makee a series of visions, first beautiful and then more frightening each time she went back, making Makee sicker and sicker each time as she fought using them. Finally, the Prophets taught Makee to stop fighting and to surrender herself to the visions that the keystones were showing her, causing the pain to go away. Instead of controlling her, these lesser keystones became Makee's servants.{{Ref/Reuse|Solace}}


==Production notes==
==Production notes==
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==Gallery==
==Gallery==
<gallery>
<gallery>
File:HTV Madrigal Artifact.png|Chief activates the Madrigal artifact
File:HTV Madrigal Artifact.png|Chief activates the artifact
File:HTV Madrigal Artifact Symbols.png|Forerunner symbols are displayed to Chief.
File:HTV Madrigal Artifact Symbols.png|Forerunner symbols are displayed to Chief.
File:HTV Madrigal Artifact Reclaimer.png|Reclaimer identified
File:HTV Madrigal Artifact Reclaimer.png|Reclaimer identified
File:HTV Madrigal Artifact Reach.png|Chief activates the artifact on Reach
File:HTV Madrigal Artifact Reach.png|Chief activates the artifact on Reach
File:HTV Madrigal Artifact Reclaimer Symbol.png|The artifact recognizes Chief as a Reclaimer
File:HTV Madrigal Artifact Reclaimer Symbol.png|The artifact recognizes Chief as a Reclaimer
File:HTV Madrigal Artifact Sketch.png|Chief's childhood drawing of the artifact.
File:HTV Madrigal Artifact Sketch.png|Chief's childhood drawing of the artifact
File:HTV-Reckoning Eridanus Artefact.png|John-117 looking at the Eridanus II artifact.
File:HTV-Reckoning Keystone.png|The artifact ready to be extracted.
File:HTV Artifact On.png|The Keystone activating on touch.
File:HTV-S2Ackersontouch.png|[[James Ackerson/Silver|James Ackerson]] with a keystone.
</gallery>
</gallery>


==List of appearances==
==List of appearances==
*''[[Halo: The Television Series Season One]]''
*''[[Halo: The Television Series]]''
**''[[Contact]]'' {{1st}}
**''[[Contact]]'' {{1st}}
**''[[Unbound]]''
**''[[Unbound]]''
**''[[Emergence]]''
**''[[Emergence]]''
**''[[Homecoming (TV Series)|Homecoming]]''
**''[[Homecoming (TV Series)|Homecoming]]''
**''[[Reckoning]]''
**''[[Solace (TV Series)|Solace]]''
**''[[Allegiance]]''
**''[[Transcendence]]''
*''[[Halo: The Television Series Season Two]]''
**''[[Sword (TV Series)|Sword]]''
**''[[Aleria (TV Series)|Aleria]]'' {{Mo}}
**''[[Onyx (TV Series)|Onyx]]''
**''[[Thermopylae (TV Series)|Thermopylae]]''
**''[[Halo (TV Series)|Halo]]''


==Sources==
==Sources==

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