WHAT IS NIGHTBLOOD???

[Deception He/Him]

What the what is Nightblood? A self aware sword that destroys souls, connections, objects, and Investiture alike? How? It acts like anti light in a way, but is powered by normal light ...what? And what is that business about it feeding off souls when it has no Stormlight - how does it do that? Also, who created Nightblood??? Was it a shard? Dawnshard? Super strong spren? Adonalsium himself? SOMETHING ELSE ENTIRELY???  

[alder24]

5 hours ago, Deception said:

What the what is Nightblood? A self aware sword that destroys souls, connections, objects, and Investiture alike? How? It acts like anti light in a way, but is powered by normal light ...what? And what is that business about it feeding off souls when it has no Stormlight - how does it do that? Also, who created Nightblood??? Was it a shard? Dawnshard? Super strong spren? Adonalsium himself? SOMETHING ELSE ENTIRELY???  

Well, to know answers to those questions you should read Warbreaker. 

[Treamayne]

Welcome to the Shard. Please consider an Intro Post to let us know what you have or have-not read (whichever list is shorter). Also, please consider checking out the Sharder FAQ for some useful forum info and tips. 

6 hours ago, Deception said:

What the what is Nightblood? A self aware sword that destroys souls, connections, objects, and Investiture alike? How? It acts like anti light in a way, but is powered by normal light ...what? And what is that business about it feeding off souls when it has no Stormlight - how does it do that? Also, who created Nightblood??? Was it a shard? Dawnshard? Super strong spren? Adonalsium himself? SOMETHING ELSE ENTIRELY???  

As @alder24 said, Warbreaker includes information on Nightblood's Origins (as well as two other characters seen on Roshar during Stormlight Archive)

Hope that helps

[Nitpicking]

Little known fact (outside this fandom): Warbreaker was written as a prequel to the Stormlight Archive.

Also something @Deception might want to know: you can read it free. Check out Brandon's web site.