What is the author of the upcoming 2017 epic fantasy novel, "Oathbringer", best known for?
Oathbringer: Oathbringer is an upcoming 2017 epic fantasy novel written by American author Brandon Sanderson and the third book in "The Stormlight Archive" series. Brandon Sanderson:  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".
the Cosmere universe