Alluria, Sword Princess

From publisher blurb: By the Power of the Primordials! Petra was raised by her enemies from infancy. At 16 she discovered that she was actually Princess Alluria (PL 10), rightful bearer of the Sword of Salvation. With it, Petra is able to transform into her true self, and battles her foes while aiding her friends. Super Powered Legends. Because sometimes what you need is a character everyone will recognize, even if they’ve never met her before.