Scream, Nightmare!

Nightmare unleashed a fierce cry, propelling the angel across the battlefield toward its summoner. The colossal wings beat forcefully, resisting decelerating the airborne celestial being. As the ethereal creature soared through the air, the stunning woman's eyes locked onto the dagger-wielder, displaying a mixture of fear and awe. 

"How... is this possible?" stammered the devout warrior, a tremor of fear coursing through his veins, causing him to retreat involuntarily, his grasp on the sword slackening. "How can a mere mortal truly defy an angel of divine retribution?"

  Arthur, his movements deft and precise, dismissed the feeble power of the angel with a flick of his dagger, slicing through the air with mesmerizing speed. The blade, aptly named Nightmare, held an ominous reputation for a reason.