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=== Hemalurgic Constructs ===
[[Hemalurgic chimera]]s are created when a living human is implanted with a trellium spike.{{book ref|mb5|21}} Due to their single spike, they are not susceptible to [[Harmony]]'s control.
== Theories ==
{{theory}}
It is possible that this is the metal referred to by [[Miles Hundredlives]] in his last words as "the final metal."
Trellium is the God Metal, or an alloy of the God Metal, of a Shard that was known when it first appeared.{{wob ref|6261}}{{wob ref|13226}} It cannot be of Ruin or Preservation, as Harmony does not recognize the metal;{{book ref|mb5|epilogue}} it also cannot be of [[Ambition]], [[Invention]], [[Mercy]], [[Valor]], or [[Whimsy]], as they were unknown when it first appeared;{{wob ref|6261}} and it has been confirmed to not be of [[Endowment]].{{wob ref|4389}} It is almost certainly not the God Metal (or an alloy thereof) of [[Devotion]], [[Dominion]], or [[Honor]] as they are all [[Splinter]]ed,{{au ref|Roshar}} which leaves [[Autonomy]], [[Cultivation]], and [[Odium]] as the remaining possibilities. Cultivation has exhibited few signs of interest in affairs beyond [[Roshar]] and it seems unlikely that she was responsible for the metal.
Though Odium's Intent seems to drive him towards conflict with the other Shards,{{au ref|Roshar}}{{epigraph ref|sa4|40}} it is unlikely that he is responsible for trellium. Odium's God Metal, [[raysium]], is bright gold,{{book ref|sa4|121}} which does not match the appearance of trellium;{{book ref|mb5|epilogue}} though this does not rule out the possibility that trellium is an alloy of raysium. Additionally, he might be reluctant to commit the Investiture required to create trellium, especially while he is waging the [[True Desolation]] on Roshar—[[Rayse]] has always planned to avoid Investing in a planet,{{wob ref|227}} though it is unclear whether Odium's new Vessel, [[Taravangian]], has similar feelings. Furthermore, Harmony distinctly mentions Odium in [[Letters#The Sixth Letter|his second letter]] to [[Hoid]] but shares that he is worried that a Shard or Shards he cannot identify are encroaching on Scadrial,{{epigraph ref|sa4|28}} suggesting that Trell is not Odium or any of the other Shards Harmony is aware of.
By process of elimination, this suggests that trellium is of Autonomy. Notably, Autonomy is known among cosmere scholars as a Shard that often intervenes on other planets{{au ref|Taldain}} and has avatars on [[First of the Sun]] and [[Obrodai]];{{wob ref|8902}}{{epigraph ref|sa3|50}} [[Trell (Trellism)|Trell]] may be an avatar of Autonomy manifesting on Scadrial.
== Trivia ==
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