|Appears in||The Way of Kings (mentioned), Oathbringer|
Yelig-nar is a member of the Unmade, a group of odious spren on Roshar. While they are traditionally depicted as personifications of destruction, they are also shown to be individuals. Brandon has confirmed that the Unmade are indeed Splinters of Odium
Yelig-nar is also known as Blightwind. He was referenced in one of Dalinar's visions, when he met with Nohadon. Yelig-nar had broken into Nohadon's chancery and slaughtered all of Nohadon's wordsmen.
Elhokar believes that this 'dark spren' is responsible for giving the actual order issued by his wife, Aesudan, for the condemnation of an ardent to death. That is, this dark spren that is controlling the palace.
Yelig-nar had great powers, perhaps the powers of all Surges combined. He could transform any Voidbringer into an extremely dangerous enemy. Curiously, three legends I found mention swallowing a gemstone to engage this process.
–From Hessi’s Mythica, page 27
Yelig-mar is said to consume souls, but I can’t find a specific explanation. I’m uncertain this lore is correct.
–From Hessi's Mythica, page 51