Part 1
Neptis found herself in another bloody battle, hired by some Lord to fight some other Lord. The specifics were never important, just that people were willing to pay for the skills of a Divine Battle-mage. Turned out all those years of lessons with various weaponry were a benefit after all she thought, running through another combatant.
The fighting had lasted several hours so far, with no signs of letting up. Admittedly, since she got payment upfront, she usually killed everyone present at every battle, in order to have more opponents to fight, in spite of how infuriatingly easy they were to kill. As she beheaded 4 men with the swoop of her staff, she suddenly felt strange. She looked down at her hands, and saw they were glowing faintly, as was her staff. She tapped her staff on the ground and the thunderclap it unleashed deafened her, and flattened several nearby trees.
"What's going on?" Neptis asked out loud. She felt power welling up from within, as if a dam was threatening to burst open. "What is this feeling?"
Two knights were trying to sneak up on her from behind, but somehow she knew without looking, and pointed her staff at them. They exploded into a shower of gore, as if squeezed by a giant hand. The feeling from within felt like a flame trying to ignite, and she felt like she needed to keep killing to satisfy the urge.
She started to leap from fighter to fighter, extinguishing their life with little effort, as if they were mere ants against her rage, and instead of satisfying the urge, it began to roar like a raging fire.
"Useless useless useless!" She screamed. "Warriors who cannot even parry me have no right to live!" She slammed her quarterstaff straight through another knight, breaking him in half, armour and all.
The urge within suddenly sparked, as if the flame was lit, and she began to shine brilliantly, like a fire in the night. Neptis started to laugh, seeing the other fighters on the battlefield for the worthless gnats they always were, and resumed her killing with a ferocious zeal.