Academy Award-nominated actress Keisha Castle-Hughes may be joining the "Game of Thrones" season five cast members.

The New Zealand Herald reports sources claimed the actress will be playing one of Oberyn Martell's bastard daughters, also known as The Sand Snakes.  Castle-Hughes is rumored to play Nymeria Sand, one of three Sand Snakes the production is reportedly looking to cast. 

Below is the description of the three Sand Snakes reportedly set to debut in season five, according to WinterIsComing.net:

Obara Sand - The eldest and most athletic Sand Snake will be having a major fight scene with a series regular character- not one who crosses her path in the books. This is an interesting change. 

Nymeria Sand - Nymeria is described as "mixed race," with her father being the fairer Oberyn and her mother being darker skinned. The second oldest of these Sand Snakes, she's beautiful, emotional and very strong.

Tyene Sand - The youngest of the Sand Snakes that we meet uses her wits and seductive powers, and is less of a physical fighter than the other Sand Snakes. She is just as deadly as her sisters, however, but her weapon is poison.

The show is also looking to cast Prince Doran Martell and Prince Trystane Martell.  Multiple reports claim showrunners will be taking a lot of creative liberties with season five, including a rumored visit to Dorne for Jamie Lannister.

HBO President of Programming Michael Lombardo recently told reporters during a Television Critics Association press tour the show will continue despite George R.R. Martin not completing sixth installment in "A Song of Fire And Ice" saga in time.

However, showrunners David Benioff and Dan Weiss are closely working with Martin to capture his vision for the "Game of Thrones" series.

"Well, again, we're not off on our own. George [R. R. Martin] is an integral part of the creative team on this," Lombardo said.  "So at least with respect to next season, every step, every move is being choreographed very closely with him. And I think, you know, certainly after next year, we will have to figure it out with George if his book's not finished at this point, but we're in conversations with him. We're not concerned about it."