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|world=Roshar
|universe=[[Cosmere]]
|books=[[OathbringerThe Stormlight Archive]]
}}
}}{{uncanonical}} {{theory}}
{{update|sa4}}
'''Vyre's knife''' is a bright golden or yellowish-white blade with a sapphire set into the pommel, used to kill the [[Herald]] [[Jezrien]] and trap his soul so that he couldn't be reborn.{{book ref|sa3|121}} The metal of the knife is described as unusually bright.{{book ref|sa3|121}}
{{merge|[[Raysium#Weapons]]}}
The'''Vyre's knife''' mayis be madea outbright ofgolden [[Odiumraysium]]'s [[Metallicblade Arts#Thewith Goda Metals|godsapphire metal]]set into the pommel, dueused to itskill similarthe coloring[[Herald]] to[[Jezrien]] thatand oftentrap associatedhis withsoul theso that he couldn't be Shardreborn.{{book ref|sa3|1121}} It is not a [[Dawnshard]].{{wobbook ref|8774sa4|84}}
== History ==
== Mechanics ==
The knife is a method tocan kill a Herald andby traptrapping theirthe soul, preventing the Herald from returning to [[Braize]] as a "conventional" Herald death would.{{wob ref|12261}} Jezrien, while initially in a drunken stupor, quickly realizes that something about this death is different and claims to feel the knife drawing something from him into itself. [[Shalash]] and [[Kalak]] likewise instantly distinguishes it from previous deaths, as shethey could no longer sense Jezrien's soul.{{book ref|sa3|121}} The knife "traps" the soul so it can't be reborn.{{wobepigraph ref|12261}} This process operates under similar principles to the [[Scadrian]] manifestation of [[Investiture]] known as [[Hemalurgy]],{{wob ref|8774}} where practitioners are able to steal part of an individual's [[spiritweb]] using metal spikes.{{book ref|mb4|part=ars}} It would cause debate among [[cosmere]] philosophers whether the knife's magical properties are in fact Hemalurgy or rather a related, but distinct, phenomenon.{{wob refsa4|866579}}
The knife "traps" the soul so it can't be reborn.{{wob ref|12261}} It functions by absorbing all of the Investiture that makes up the Cognitive Shadow of a Herald, running it down the length of the blade and into the gemstone set into the pommel.{{book ref|sa3|121}}{{book ref|sa4|84}} This process operates under similar principles to the [[Scadrian]] manifestation of [[Investiture]] known as [[Hemalurgy]],{{wob ref|8774}} where practitioners are able to steal part of an individual's [[spiritweb]] using metal spikes.{{book ref|mb4|part=ars}} It would cause debate among [[cosmere]] philosophers whether the knife's magical properties are in fact Hemalurgy or rather a related, but distinct, phenomenon.{{wob ref|8665}}
Following Jezrien's death, the sapphire set into the knife takes on a "subdued glow". The sapphire in the knife's hilt is specifically for Jezrien.{{wob ref|8798}} Whether the use of that specific [[polestone]] is mechanically relevant or only symbolic is unknown.
The knife shares characteristics with [[Shardblade]]s, by leaving blackened wounds,{{book ref|sa1|prologue}} and [[Nightblood]], as they both bleed black smoke and leave blackened wounds.{{wob ref|7374}}{{book ref|sa3|121}}
== Notes ==
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{{complete|--[[User:WeiryWriter|WeiryWriter]] ([[User talk:WeiryWriter|talk]]) 11:03, 11 March 2018 (MST)}}
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