Constance Oathsworn, Paladin / Warlock Tiefling for D&D

After suffering a horrible defeat in a battle to defend her homeland, one human paladin cried out in terror, begging for her life. Though this did not break her oath, it allowed darkness to enter her soul. Tainted, the human was changed into a member of that infernal race, the tiefling. The dark power that entered her heart allowed her to escape, but at the cost of her humanity, and possibly her soul. Now, unable to return home, she travels to a new land in search of a way to reverse the infernal curse. All evil falls in her path, and she uses the powers of both light and darkness to deliver Tyr's justice.