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|world=Roshar
|universe=[[Cosmere]]
|books=[[The Stormlight Archive]], [[The Sunlit Man]]
}}
{{update|sa3|sa4}}
{{spoilers|tsm}}
{{quote
|According to legend, the Shardblades were first carried by the [[Knights Radiant]] uncounted ages ago. Gifts of their god, granted to allow them to fight horrors of rock and flame, dozens of feet tall, foes whose eyes burned with hatred. The [[Voidbringer]]s.
{{image|The Blackthorn by Harry Shea-Pelletier.jpg|side=right|width=300px|[[Dalinar]] wielding [[Oathbringer (Shardblade)|Oathbringer]]}}
While there are a few differences between the various types of Shardblades, they all share a few common traits. All are larger but lighter than any normal sword
Shardblades can cut through non-living objects, such as wood or stone, as if they are passing through water.{{book ref|sa1|prologue}} Even though they can cut through nearly any material, there is still a slight bit of resistance even when cutting through inanimate objects.{{book ref|sa2|44}} When cutting through an object, Shardblades leave behind distinctive perfectly clean cuts.{{book ref|sa3|50}} However, when swung at a person or other living object, the edge of the Shardblade will fuzz, leaving the physical body unharmed, and cutting the being's soul. It is still possible to Soulcast a person killed by a Shardblade.{{book ref|sa4|104}}{{book ref|sa4|114}} The wielder of the Blade feels a small tug of resistance as the Blade passes through living material.{{book ref|sa1|13}} If the Blade cuts the core of a person's limb, the person feels a flash of incredible pain and then the limb turns gray and becomes limp and numb.{{book ref|sa2|32}} If an internal organ is pierced by a Shardblade, it may be killed or cease to function.{{book ref|sa1|13}} If the Blade strikes the spine or head, the eyes of the person blacken and burn out with a dark smoke rising from them.{{book ref|sa1|prologue}}
Shardblades cannot be blocked by any typical weapons or armor, but they can be halted by a few things. One Shardblade can block another Shardblade,{{book ref|sa1|prologue}} and when the two collide they may produce sparks.{{book ref|sa1|68}} Shardplate can also stop a Shardblade, although two blows to a section of Shardplate is typically enough to shatter it.{{book ref|sa1|prologue}} The [[half-shard]]s of [[Jah Keved]] were also designed by more modern artifabrians to be resistant to Shardblades.{{book ref|sa1|22}} These are shields with an [[Augmenter]] attached,{{book ref|sa1|part=ars}} allowing them to withstand two blows from a Shardblade before breaking.{{book ref|sa1|i|9}} Other highly [[Investiture|Invested]] objects, such as a fully charged [[metalmind]], would be enough to block, or at least resist, a blow from a Shardblade.{{wob ref|3670}} A heavily Invested person can theoretically resist a blow from a Shardblade.{{wob ref|683}} The final known way to block a Shardblade is with [[aluminum]],{{wob ref|1437}} which is a rare material on Roshar as it can only be obtained through [[Soulcasting]].{{book ref|sa2|48}} It is worth noting that the aluminum only nullifies the supernatural sharpness of the Blade, so a thin sheet of aluminum foil would be sheared through easily by a Blade.{{wob ref|1442}}
=== Healing Shardblade Wounds ===
There are a few known ways for a Shardblade wound to be healed. A Radiant who is infused with [[Stormlight]] is capable of healing themselves when they are wounded by a Shardblade, but it requires a large amount of Stormlight.{{book ref|sa2|33}} When a Radiant heals a Shardblade wound on themselves, they create an entirely new piece of soul to replace the old and graft it on to their [[
== Types ==
There were three main types of Shardblades used on Roshar during the [[Era of Solitude]]. They were the Honorblades of the Heralds, the Shardblades of the typical Radiants,
=== Honorblades ===
=== Radiant Shardblades ===
Radiant Shardblades are granted to people who are on the path to becoming a full Radiant and have sworn a particular oath of the [[Immortal Words]].{{book ref|sa2|84}} The number of oaths they must swear before obtaining their blade varies from order to order.{{wob ref|7873}} At that point, the spren belonging to the Radiant will gain the ability to become a Shardblade in the Physical Realm unique to that particular Knight Radiant.{{book ref|sa2|84}}{{book ref|sa4|35}} Some Nahel spren are forbidden from telling their Radiant about how to gain their Blade, although this differs between Orders.{{book ref|edgedancer|2}}{{book ref|sa3|90}} As long as the spren is with the Radiant the spren can transform into a Blade instantaneously.{{book ref|sa2|86}} The spren becomes mist and coalesces into the Blade when it is desired,{{book ref|sa2|84}} and then dissipates back to mist when the Blade is dismissed.{{book ref|sa2|86}} If the Radiant is a darkeyes, their eyes are lightened,{{book ref|sa2|85}} though this effect is temporary and lasts only for a few hours after they summon the Blade.{{book ref|sa3|5}}
{{sidequote
|side=right|size=300px
}}
The spren
If given extra Investiture through their bond, Radiant Blades can grow much larger and heavier than normal.{{book ref|tsm|17}}{{book ref|tsm|3}}{{book ref|tsm|47}} They could also protect against heat that could burn a person alive in seconds.{{book ref|tsm|39}}
Radiant Blades are able to be dulled with a mental command, but can still cut through things like a normal sword.{{book ref|sa4|15}} Radiant Blades may be lent to others, just like their dead counterparts, and may even change form in order to aid the borrower.{{book ref|sa2|72}}{{book ref|tsm|42}} When the Radiant who owns the Blade dies, the spren is freed and may bond again with another person one day.{{wob ref|6688}} A Radiant's living Shardblade can be used to activate [[Oathgates]].{{book ref|sa3|8}} They can also harm spren in the Physical Realm.{{book ref|sa3|84}}{{book ref|sa4|2}}
Each default form that Radiant Shardblades take is unique, typically around six feet in length and a handspan in width.{{book ref|sa2|18}} They can be edged on one{{book ref|sa2|16}} or both sides,{{book ref|sa2|66}} and are often ornamented with [[glyphs]],{{book ref|sa2|86}} as well as patterns along the edges,{{book ref|sa2|84}} which may correspond with the [[Ten Essences|essence]] of that particular Radiant's order. The Blades also glow slightly along its lines with the [[Polestone]] color that corresponds to their Radiant's order.{{book ref|sa2|84}}{{book ref|sa2|72}}
{{image|Shardblades by Marianne Eie.jpg|width=300px|side=right|Blade designs}}
Dead Shardblades are blades that were once owned by members of the Knights Radiant.{{book ref|sa2|87}} If a Radiant that has a Shardblade betrays their oaths, their spren is killed and its body is trapped in the shape of the Blade. Dead Shardblades lose some of the functionality that they once had. The Blades lose most of their ability to change into different weapons, although the shape of the Blade may change slightly to accommodate its owner after being used for a long time.{{wob ref|7728}} The dead Shardblades are nearly identical to how they appeared while still wielded by the Radiants, but there are two small differences. Each dead Shardblade has a [[Polestone]] attached to its pommel or crossguard,{{book ref|sa3|73}} whereas
As the [[Nahel bond]] with the original Radiant seems to have been severed, a new bond has to be formed in order for a Blade to be summoned and dismissed. When a new owner touches a Shardblade for the first time, the gemstone on the pommel flashes.{{book ref|sa1|51}}{{book ref|sa2|66}} The person who wishes to bond with the Blade must keep it in close quarters to
When the holder of a dead Shardblade is killed, the Shardblade appears on the ground next to them.{{book ref|sa1|prologue}} A dead Shardblade may also be given up willingly. This process of breaking the bond requires willing the bond to break{{book ref|sa3|43}} with intense concentration while touching the gemstone of the Blade.{{book ref|sa2|89}} When the bond is severed completely, the gemstone on the pommel flashes,{{book ref|sa2|14}} and the former wielder feels a sensation of icy cold wash through their body.{{book ref|sa3|43}} If someone who was previously a darkeyes breaks their bond with a Blade, their eyes return to their original coloration.{{book ref|sa3|43}} A person may be bonded with multiple dead Shardblades but they have to be summoned individually.{{wob ref|1260}}
{{sidequote
Dead Shardblades may be returned to their previous function if their previous Radiant recommits themselves to their abandoned oaths.{{book ref|sa2|86}} Their spren can be reawoken and the dead Shardblade returns to its previous functionality. However, once their original Radiant has died, there is no known way to bond with the dead spren, heal their mind, and repair the Blade. It is possible for someone speaking the oaths of the Radiants to heal the spren within the Blade, but it would be very difficult.{{wob ref|7095}} The spren has had some portion of their consciousness torn away when the Nahel bond was broken and this chunk would have to be replaced to fix the Blade.{{wob ref|6053}} [[Adolin Kholin]] may be on the pathway to repairing his Blade in some way, potentially due to his close relationship with his Blade.{{book ref|sa3|120}} He is able to determine the spren's name, [[Mayalaran]], summon it earlier than normal, and even sense impressions from the Blade.
Awakening a Dead Shardblade in an attempt to fix them would not work.{{wob ref|8953}} This is likely a result of the heavily Invested nature of Shardblades.{{book ref|sa4|part=ars}}{{wob ref|5799}}{{wob ref|2675}}{{wob ref|7028}}{{wob ref|3882}}
== History ==
The Radiants continued on, independently of the Heralds for several hundred years at least, until the [[Day of Recreance]], when the Radiants abandoned their Shards for unknown reasons.{{book ref|sa1|52}} When the Radiants laid down their Shards at the Recreance, they broke their bonds with their spren by betraying their oaths, killing them and trapping their bodies within the Shardblades they left behind,{{book ref|sa2|87}} leaving the spren in a state of eternal agony.{{book ref|sa3|28}} Initially, when the Radiants abandoned their Shardblades, the Blades remained fantastically sharp, but could no longer be bound to a person or summoned.{{book ref|sa1|67}} This betrayal of the Nahel spren broke their trust with humankind.{{book ref|sa2|3}} They refused to bond with men anymore and returned to Shadesmar.{{book ref|sa1|17}} At some point during the [[Era of Solitude]], the [[Herald]] [[Nale]] retrieved his own Honorblade for reasons unknown.{{wob ref|2562}}
A few decades after the Recreance, a process was discovered to add a gemstone to the pommels of the Shardblades.{{book ref|sa2|67}} The Shardblades even shifted form to allow for the gemstones. This returned some of their old function to the dead Blades. They could once again be summoned, but they were not the same. For the next several hundred years following the Recreance, Shardblades were prized among nations of the world both as weapons of war{{book ref|sa1|29}} and symbols of power.{{book ref|sa1|23}} These Blades were considered to be heirlooms, and their paths and histories are accounted for through the generations.{{book ref|sa2|i|7}}
In the years immediately following the Recreance,{{wob ref|900}} a book called [[Arts and Majesty]] was written, dividing disciplines into masculine and feminine.{{book ref|sa2|25}} It claimed that masculine tasks were those done with two hands, while feminine tasks could be done with one. This was an attempt by men to gain exclusive control over Shardblades;{{wob ref|6245}} an attempt that was almost entirely successful.{{book ref|sa1|19}} This cultural shift happened over a particularly brief period of around twenty years.{{wob ref|900}} During this time, Shardblades were also used for some unusual purposes, such as carving the city of [[Yeddaw]] out of the ground.{{book ref|edgedancer|2}}
It is uncertain if or when any new Radiants crafted Shardblades during this time period. It seems unlikely, as the Nahel spren had all retreated to their homeland of [[Shadesmar]].{{book ref|sa1|17}} There may have been a few dissident spren, similar to [[Sylphrena]]{{book ref|sa2|32}} or [[Ivory]]{{book ref|sa2|3}} but if there were any, they were few and far between. It is likely that any few Radiants arising during this time were killed by Nale, as he had been working for centuries to prevent the return of the Radiants.{{book ref|sa2.5|part=postscript}}
The first non-Skybreaker Radiant confirmed to have created a Shardblade following the Recreance was [[Shallan Davar]], a young [[Veden]] girl.{{book ref|sa2|88}} She and her first spren, a [[Cryptic]] known as [[Testament]], reached the point in their bond where Shallan gained a Shardblade. However, Shallan's mother, who was possibly connected with the [[Ghostbloods]] or [[Skybreaker]]s, recognized her potential as a Radiant. She attempted to murder Shallan, but was instead killed in defense by Shallan wielding her Shardblade. This experience was so traumatizing to Shallan that she was unable to recall the exact circumstances of how she gained her Blade for many years, so knowledge of how Shardblades were created remained hidden.
In the year 1168, [[Szeth|Szeth-son-Neturo]], a [[Truthless]] of [[Shinovar]] was sent by the [[Parshendi]] to kill [[Gavilar Kholin]], king of the kingdom of [[Alethkar]].{{book ref|sa1|prologue}}
In the final few days of year 1173, a former slave known as [[Kaladin Stormblessed]], who had bonded a [[honorspren]] named [[Sylphrena]],{{book ref|sa1|57}} swore the third [[Immortal Words|Ideal]] of the [[Windrunners]].{{book ref|sa2|84}} This allowed Syl the ability to become a Shardblade, returning the knowledge of the origins of Shardblades to mankind. Kaladin then used his Shardblade to fight Szeth, and reclaim Jezrien's Honorblade.{{book ref|sa2|86}} By this same time, [[Jasnah Kholin]] had also managed to progress to a point in her bond where her spren, [[Ivory]], could become a Blade.{{book ref|sa2|epilogue}} A few days later, in 1174, the [[Order of Edgedancers|Edgedancer]] [[Lift]] swore the third Ideal of her order, allowing her spren [[Wyndle]] to take the form of a Shardblade.{{book ref|edgedancer|19}}
Even within the Vorin kingdoms themselves, those with Shardblades were usually seen as more powerful. Highprinces of Alethkar and Jah Keved jostle with one another for position and influence,{{book ref|sa1|15}} and Shardblades are just another tool and indication of power and authority.{{book ref|sa2|5}} Duels for Shards can be used to embarrass political enemies as well as to weaken their military strength. For instance, Highprince Dalinar Kholin had his son duel Shardbearers that supported Torol Sadeas politically,{{book ref|sa2|51}} in order to disarm and shame them.{{book ref|sa2|5}} As most Blades are won by those who already have their own Shards, not all Blades are kept by the person that wins them. Oftentimes they are bestowed upon an heir or relative,{{book ref|sa1|18}} a worthy warrior,{{book ref|sa2|16}} a loyal officer,{{book ref|sa1|18}}{{book ref|sa2|66}} or even sometimes promised to an ally.{{book ref|sa1|24}} It is worth noting though that even if a person is said to own a Shardblade, it is considered treasonous to sell the Blade or defect to another kingdom.{{book ref|sa2|66}} However other than this exception, when a person is able to claim and bond a Blade without having it taken from them, no one will question their ownership of the weapon.{{book ref|sa3|7}}
Outside of Vorin Roshar, other regions usually have far fewer Blades and they deal with them quite differently. The [[Thaylenah|Thaylens]] have only five Blades, which they keep in the hands of their Royal Guards.{{book ref|sa1|23}} The [[Herdaz|Herdazians]] have but a single Blade, which is kept in the royal line, passed from each king to his heir. In the Makabaki regions, the [[Prime Aqasix]] of [[Azir]] controls the Imperial Shardblades which he rents to the smaller kingdoms.{{book ref|edgedancer|2}} The Selay have several Blades of their own as well.{{book ref|sa1|23}} Even the [[listener]]s
A less common use for Shardblades was in assassination. Shardbearer assassins were by no means commonplace, but the [[Weeper]]{{book ref|sa2|prologue}} and [[Szeth|Szeth-son-son-Vallano]] used Shardblades in assassinations.{{book ref|sa1|prologue}} A potential strategy made use of by Shardbearer assassins is to give the Blade to a woman.{{book ref|sa2|36}} Centuries after the last female Radiants, Shardblades are rarely carried by women, so no one would expect to have to defend against, for instance, a washerwoman wielding a Shardblade. Other Shardbearer assassins, such as the Weeper, remove the burned out eyes of their victims, to hide the fact that they make use of a Shardblade.{{book ref|sa2|prologue}}
Even though the Radiants are a distant memory of the past of Roshar, their influence still permeates Vorin society.{{book ref|sa2|87}} Indeed, it is the memory of the Radiants, whose eyes were lightened upon bonding their Blade, that led to the stratification of Vorin society into castes based on eye color. Even some titles may be passed with Shards; for instance in [[Thanadal|Thanadal's princedom]], the owner of a certain set of Shards is typically given the title of Royal Defender.{{book ref|sa1|58}}
The cardinal rule of Shardblades is that any person who kills a Shardbearer is entitled to the Shards that person possess, regardless of their social status.{{book ref|sa1|46}} Any person in Vorin society that gains a Shardblade is instantly raised to the level of a fourth dahn lighteyes if they were not already at that rank or higher.{{book ref|sa2|66}} This grants that person the title of highlord, as well as lands of their own and incomes from those lands. Upon being raised, they may make their own noble house or ask permission to join another house. Anyone that bonds a Shardblade instantly becomes one of the most influential people in the kingdom, and their presence is expected at all social events of note.{{book ref|sa2|67}} They are so important that they become, to some extent, above the law.{{book ref|sa2|76}} For more
When someone bonds a Shardblade, most commonly they maintain that bond up until the point of their death or it is lost in a duel or some other way.{{book ref|sa1|52}} It is worth noting though that to win a Blade fairly requires a true contest, in most cases.{{book ref|sa3|36}} Doing something like taking one from a child who cannot defend themselves may be frowned on or cause for rebellion, although there is oftentimes no way to force the Blade to be returned. The only circumstance that a person would willingly give up their Blade is when they become to weak or ill to be able to use it themselves, and even then it is uncommon and done with reluctance. In Vorin kingdoms, upon a Shardbearer's natural death, a Blade is most commonly passed on down their family line.{{book ref|sa2|14}} While passing the Blade from father to son is the most common, every person who owns a Blade has the right of bestowal, the ability to chose their successor themselves.{{book ref|sa3|10}} Most Shardblades have a detailed history and lore of their own{{book ref|sa3|11}} as well of drawings done of them{{book ref|sa2|44}} Royal records done by scholars{{book ref|sa2|44}} track the lineage of Blades down through the generations as they are passed down families{{book ref|sa2|i|7}} or change hands between brightlords and kings.{{book ref|sa3|11}} Oftentimes they also are given a name, such as Firestorm or Sunraiser, although some Shardbearers prefer not to name their Blades.{{book ref|sa2|14}}
===
{{image|Dalinar_the_Blackthorn.jpg|width=300px|side=right|Dalinar, wielding Oathbringer, fights a chasmfiend}}
Shardblades are often used in [[greatshell]] hunts, enormous Vorin sporting events.{{book ref|sa1|12}}
=== Dueling ===
=== Training Shardbearers ===
A Shardbearer is typically trained in a specific way among the Alethi. Lighteyed boys of appropriate rank around the age of ten are chosen by an ardent swordmaster for training.{{book ref|sa2|16}} These boys typically already have at least some training with the sword. The swordmasters train in training grounds run by the ardentia. The swordmaster's job is teaches them the ten [[Stances|Shardblade Stances]], which are used in both dueling and regular combat.{{book ref|sa2|44}} They train with Blades in two ways. If the trainee has no Blade of his own, they can make use of wooden practice swords that approximate the balance and weight of a real Blade. They may also borrow one of the King's Blades.{{book ref|sa2|16}}
=== King's Blades ===
One of the strongest traditions in Alethkar is the loaning of the King's Blade.{{book ref|sa2|58}} In Alethkar, both the king's Blade and his Plate are available to be used in a duel by those who have the favor of the king and are without Shards of their own. Borrowing the Blade does cost a hefty amount of [[sphere]]s, but it is not uncommon. Oftentimes kings dislike or are uncomfortable with this tradition, but they still follow the tradition. Kings will also make their Blades available for trainee Shardbearers to practice wielding an actual Blade.{{book ref|sa2|16}} This tradition is one of the reasons the Alethi have the best trained Shardbearers on Roshar. Whenever a Shardbearer is killed or dies, there is always someone prepared to bond their Blade and use it right away. On some occasions, a king will even allow their Blade to be used in actual combat, but it is uncertain how commonly this occurs.{{wob ref|8849}} If a king has multiple Blades, he will sometimes bestow one of the King's Blades on someone who he thinks is deserving of a Blade of their own.{{book ref|sa2|16}} Before the monarchy was restored in Alethkar, the highprinces carried on the tradition of the King's Blade by lending their own Blades.{{book ref|sa1|58}}
=== Space age Cosmere ===
In the space age of the cosmere many planets have a universal fascination with Shardblades, and attribute Shardbearers with signs of divinity.{{book ref|tsm|11}} The wielders of dead Shardblades have a reputation for doing mercenary work, to the point of people assuming someone is a mercenary when they have a Blade.{{book ref|tsm|44}}
== Battle Tactics ==
|side=right|size=300px
}}
As swords and arrows are practically useless against a Shardbearer, heavy weapons such as war hammers and axes are often used in an attempt to shatter the plate.{{book ref|sa1|56}} The most common tactic is to simply drown a Shardbearer in enemies.{{book ref|sa2|85}} Enemy forces attempt to attack from all directions, hoping that the Shardbearer may grow distracted or disoriented.{{book ref|sa1|56}} Despite the fact that most regular soldiers are afraid to face a Shardbearer, when they attack in large groups the weight of the army can force even the reluctant forward,{{book ref|sa1|56}} and there is always the chance that someone will get in a lucky blow.{{book ref|sa2|85}} Shardbearers are vulnerable if they can be separated from the soldiers supporting them, so if an army can separate a Shardbearer from their honor guard and limit their mobility, they have a decent chance of killing him.{{book ref|sa1|28}} One tactic to reduce a Shardblade's effectiveness is to get in close to the Shardbearer, staying within the Shardbearer's reach{{book ref|sa3|11}} and taking advantage of the Blade's long, non-lethal hilt.{{book ref|sa1|56}}{{book ref|sa2|89}}
One common vulnerability a Shardbearer has is their own arrogance. In fact, oftentimes Shardbearers allow their combat skills to dull or never bother becoming terribly skilled in the first place, as they become used to being near-invincible and fantastically stronger than any of their opponents.{{book ref|sa1|i|9}} This can be the undoing of a Shardbearer who faces a more practiced opponent or a Surgebinder. One specific move to counter a Shardblade that makes use of this weakness is called a lastclap.{{book ref|sa2|44}} Oftentimes Shardbearers do not swing at their full strength as they typically do not need to do so when fighting in large battles, as they have a Blade that can cut through any material.{{book ref|sa1|58}} This means that when they are swinging downward at an enemy with an overhead blow, the person they are swinging at can sometimes catch the Blade between their palms.{{book ref|sa2|32}} Some see this as a dumb move, only useful as a last resort, because it relies fully on an enemy's lack of care.{{book ref|sa2|44}}
{| class='infobox sortable' align=center width=100%
|- class=title
! Spren Name !! Radiant Name !! Order !! class=unsortable|
|-
| [[Ivory]]
| [[Windrunner]]
| Hammer or spear
| Larger than a typical [[Shardhammer]]
|{{book ref|sa3.5|18}}{{book ref|sa3.5|19}}
|-
| [[Windrunner]]
| Spear
| Spear with a
|
|-
{| class='infobox sortable' align=center width=100%
|- class=title
! Shardbearer !! Blade Name !! Previous Holder
|-
| [[Adolin Kholin]]
| ''Unknown''
| Edged on both sides, flame patterns
|
| {{book ref|sa2|14}}
|-
{| class='infobox sortable' align=center width=100%
|- class=title
! Shardbearer !! Blade Name !! Previous Holder !! Next Holder !! class=unsortable|
|-
| [[Abrobadar]]
=== Interactions with other Investitures ===
Shardblades also seem to have a unique interaction with the Innate Investiture. When a Shardblade cuts a living being, it seems to sever the [[
[[Forgery]] could be used to gain a Shardblade, with some restrictions.{{wob ref|7235}} The Investiture is not powerful enough to temporarily create a new Shardblade, and if it somehow could it would be terribly inefficient.{{wob ref|4859}}
While there are only three known ways to heal from a Shardblade wound on [[Roshar]], it seems likely that other magic systems would also allow for that same healing. On [[Scadrial]], [[Gold#Feruchemical Use|goldminds]] of [[Feruchemy]] could be used to heal Shardblade damage.{{wob ref|4111}} The [[BioChromatic Breath|Divine Breath]], the Breath of the [[Returned]] of [[Nalthis]], able to heal any typical wound or illness,{{wob ref|6724}} is also a possible solution for repairing the damage. On [[Sel]], the [[Aon]] [[Aon#Ien|Ien]], used for healing,{{book ref|elantris|19}} could potentially heal a Shardblade wound as well.
''See also: [[Nightblood]]''
While most Shardblades originate on Roshar and seem to be ultimately derived from the power of [[Honor]] and possibly [[Cultivation]], this is not true of all Shardblades. The technical definition of a Shardblade is a heavily Invested weapon,{{wob ref|4878}} so Shardblades can be crafted with any manifestation of Investiture from any Shard, although some methods are far more difficult.{{wob ref|4859}} For instance, the sentient sword [[Nightblood]], created by [[Vasher]] and [[Shashara]] of [[Nalthis]] using [[Awakening]] and [[Investiture]] derived from the [[Shard]] [[Endowment]],{{book ref|wb|51}} is also considered a Shardblade.{{wob ref|6892}}{{wob ref|5152}} However, it is no ordinary Shardblade. While it cannot be summoned or take other forms like a [[spren]] can,{{book ref|sa2|86}} it is in fact several orders of magnitude more powerful than the Shardblade of a Radiant.{{wob ref|5617}}{{wob ref|163}} Nightblood is possibly even more powerful than the Honorblades. When struck against Ishar's Honorblade, that Blade was chipped.{{book ref|sa4|111}} It is unknown whether a spren Shardblade struck by Nightblood would be destroyed or damaged. Unlike typical Shardblades, Nightblood feeds on Investiture--such as Breaths,{{book ref|wb|56}} Stormlight,{{book ref|sa3|90}} and, ultimately, the bearer's soul--when it is drawn.{{wob ref|5813}} Nightblood is capable of consuming almost all types of Investiture.{{wob ref|661}}{{wob ref|6631}}
== Development ==
|