Question: Scadrial is a fictional planet in the Mistborn series,  a series of epic fantasy novels written by what American author?

Context paragraphs:
Crown of Stars (series): Crown of Stars is a series of epic fantasy novels by American author Alis A. Rasmussen, under the pen-name Kate Elliott.  The series consists of seven novels.

The Last Rune: The Last Rune is a series of six epic fantasy novels written by American author Mark Anthony.  It concerns the exploits of two earthlings, tavern owner Travis Wilder and ER doctor Grace Beckett, as well as those of their allies, both throughout their homeworld of Earth and the otherworld of Eldh.  Travis soon discovers that he has a wild talent for the magic of runes, which gives him power over the material world, while Grace learns that she is a witch, with power over nature.

Mistborn: Secret History: 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.

The Sword of Truth: The Sword of Truth is a series of nineteen epic fantasy novels written by Terry Goodkind.  The books follow the protagonists Richard Rahl, Kahlan Amnell and Zeddicus Zu'l Zorander on their quest to defeat oppressors who seek to control the world and those who wish to unleash evil upon the world of the living.  While each novel was written to stand alone, except for the final three that were intended to be a trilogy, they follow a common timeline and are linked by ongoing events that occur throughout the series.

Mistborn series: Mistborn is a series of epic fantasy novels written by American author Brandon Sanderson and published by Tor Books.  The first series, published between 2006 and 2008, consists of "", "", and "".

Mistborn Adventure Game: 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 "".

The Powder Mage trilogy: The Powder Mage trilogy is a series of epic flintlock fantasy novels written by American author Brian McClellan.  It consists of the novels "Promise of Blood" (2013), "The Crimson Campaign" (2014) and "The Autumn Republic" (2015).  In 2014, "Promise of Blood" received the Morningstar Award for Best Fantasy Newcomer.  Several short stories and novellas set in the world of "The Powder Mage" trilogy have been published.

Legend of Asahiel: The Legend of Asahiel is a series of epic fantasy novels written by author/screenwriter Eldon Thompson and published by HarperCollins (Eos).  The series was launched in May 2005 with the hardcover release of The Crimson Sword.  The Obsidian Key followed in 2006.  The concluding novel, The Divine Talisman, was released in 2008.

Scadrial: Scadrial is a fictional planet in the Mistborn series by Brandon Sanderson.  After the collapse of , and ascension of the god Harmony, the planet became transformed into a fertile, mostly flat region.

Ix (Dune): Ix is a fictional planet featured in the "Dune" series of science fiction novels written by Frank Herbert, and derivative works.  In "Dune" (1965) it is noted that Ix is classed with the planet Richese as "supreme in machine culture," and that Ixian solido projectors "are commonly considered the best."  In "Dune Messiah" (1969) Herbert explains that the planet's name (a spelling pronunciation of the Roman numeral IX) is derived from the fact that it is the ninth planet of its sun.  Ixian devices are commonplace and considered essential throughout the rest of the series, though they sometimes test the limits of the anti-technology proscriptions of the Butlerian Jihad, humanity's crusade against computers, thinking machines, and conscious robots.

Supporting paragraphs: Scadrial Mistborn series
Answer: Brandon Sanderson