Sister Theo surprisingly reveals her ability to shapeshift in Dune: Prophecy episode 4 "Twice Born" which indicates that she could be a Face Dancer.

Dune: Prophecy's episode four ending brings a Theo revelation that draws on Dune's Face Dancers, shapeshifters created by the Bene Tleilax.

Prophecy episode 4. Desmond Hart begins bleeding out of scars in Dune: Prophecy episode 4, raising questions about his mysterious past and powers. Travis Fimmel plays Hart in Dune: Prophecy's cast, an original character to the show whose abilities don't seem to come from any of the Dune books.

Prophecy Guide for Dummies' continues with dreams of sand worms, people burned alive and new shape-shifting abilities.

Dune: Prophecy has dropped its fourth episode. It showcased numerous interesting turns from Tula’s attempt to revive Lila to the mystery around Desmond Hart’s bleeding scars. However, the most intriguing aspect was linked with the character of Theodosia played by Jade Anouka.

Dune: Prophecy episode 4 sees Theodosia turn into Griffin Harkonnen. Using info from the books, here's what we know about what she did.

Dune: Prophecy Episode 4 “Twice Born” ends with a moment so wild that there’s a massive chance you had no idea what exactly was going on. At long last, we understand what the HBO show meant when it kept enigmatically alluding to special skills that the young acolyte Theodosia (Jade Anouka) possessed.