<Tr> <Th> Preceded by </Th> <Td> Darth Bane: Path of Destruction </Td> </Tr> <Tr> <Th> Followed by </Th> <Td> Darth Bane: Dynasty of Evil </Td> </Tr> <P> Darth Bane: Rule of Two, the sequel to the novel Darth Bane: Path of Destruction, is part of the Star Wars expanded universe . It was written by Drew Karpyshyn, and was released on December 26, 2007 . The novel centers on the young Sith apprentice Darth Zannah, recently taken under the wing of the Sith Lord Darth Bane . The "Rule of Two" of the title refers to the rule that there be only two Sith in existence at one time: a Master and an Apprentice, a rule that Bane originates . </P> <Table> <Tr> <Td> </Td> <Td> This article's plot summary may be too long or excessively detailed . Please help improve it by removing unnecessary details and making it more concise . (March 2012) (Learn how and when to remove this template message) </Td> </Tr> </Table>

Who created the rule of two in star wars