The Gathering Storm is a fantasy novel by American writers Robert Jordan and Brandon Sanderson, the twelfth book in the series "The Wheel of Time".
 It was incomplete when Jordan died on September 16, 2007, from cardiac amyloidosis.
 His widow Harriet McDougal and his publisher Tom Doherty chose Sanderson to continue the book.
Mistborn: Secret History is a fantasy novella by American author Brandon Sanderson, written as a companion story to the original trilogy of the Mistborn series.
 It was published as an ebook-only novella by "Dragonsteel Entertainment LLC", a company owned by the author, on 30 January 2016.
This is the bibliography of American fantasy and science fiction writer Brandon Sanderson.
The Stormlight Archive is an ongoing epic fantasy series written by American author Brandon Sanderson.
 Planned as the first of ten books, "The Way of Kings" was published on August 31, 2010 by Tor Books in the United States.
 The second book, "Words of Radiance", was published on March 4, 2014.
 The third book in the series, titled "Oathbringer", is scheduled to be released on November 14, 2017.
Words of Radiance is a 2014 epic fantasy novel written by American author Brandon Sanderson and the second book in "The Stormlight Archive" series.
 The novel was published on March 4, 2014 by Tor Books.
 "Words of Radiance" consists of one prologue, 89 chapters, an epilogue and 14 interludes.
 It is preceded by "The Way of Kings" and followed by "Oathbringer".
Oathbringer is an upcoming 2017 epic fantasy novel written by American author Brandon Sanderson and the third book in "The Stormlight Archive" series.
 It will be published by Tor Books and is scheduled to be released on November 14, 2017.
 "Oathbringer" will consist of one prologue, 122 chapters, an epilogue and 14 interludes.
 It is preceded by "Words of Radiance".
Arcanum Unbounded: The Cosmere Collection is a collection of epic fantasy short stories and novellas written by American author Brandon Sanderson set in his Cosmere universe.
 It was published on November 22, 2016 by Tor Books.
Elantris is a fantasy novel written by American author Brandon Sanderson.
 It was first published on April 21, 2005 by Tor Books and is significant as Sanderson's first published book.
The Mistborn Adventure Game is a pen and paper role playing game that was published in 2011 by Crafty Games and is a licensed release based on American author Brandon Sanderson's "Mistborn" novel series.
 Sanderson was involved in the game's creation and the game is set in Scadrial; the World created by the "Mistborn" series.
 The initial "Mistborn Adventure Game" book was released on December 16, 2011.
 Since 2011, two supplementary material books have been published.
 The first supplement was released March 2014 and is called "Terris: Wrought of Copper".
 The second supplement was released on August 3, 2014 and is called "Alloy of Law", not to be confused with the fourth "Mistborn" book called "".
Brandon Sanderson (born December 19, 1975) is an American fantasy and science fiction writer.
 He is best known for the Cosmere universe, in which all his adult fantasy books most notably the "Mistborn" series and "The Stormlight Archive", are set; and his work in finishing Robert Jordan's epic fantasy series "The Wheel of Time".

Question: In what universe is writer's Brandon Sanderson's "Oathbringer" set?
Answer: Cosmere universe