As the moonlight filtered through the stained glass windows of the ancient cathedral, its beams danced over the cracked stone floor, casting ghastly shadows that seemed to writhe with a life of their own. The air was thick with an unholy tension, as two figures faced each other in the cavernous nave—a blighted place that had once been hallowed, now turned into a sinister arena for their titanic clash. Geist the Bloody stood resolute, his form clad in an armor that seemed to drink the shadows. His eyes held an icy resolve, his breath visible in the chill air. In his hand rested Doomsday, the sword woven from crystallized blood, its edge glistening with a spectral crimson. He spoke, his voice a growl that reverberated through the vaults of the towering ceiling, "Jane de Canon, tonight your accursed life of darkness finds an end." Across the expanse, Jane de Canon grinned, her fangs glinting menacingly. She was shrouded in a cloak as dark as the void, the Book of the Dead clutched tightly in her pale hands. Her movements were a blur, a testament to her supernatural speed. "Geist," she hissed, her voice a silken whisper that cut through the silence, "I knew you would come. Let us see if your sword can match the power of ancient spells." A sudden, bitter wind howled through the cathedral as they lunged at one another with a speed that defied all reason. Geist swung Doomsday in a deadly arc, its motion a fluid symphony of lethal intent. But Jane was faster, slipping through the space between moments, her form a phantom as she evaded each strike with an ease that belied her vampiric nature. Yet Geist, with the cunning of a seasoned warrior, bided his time. He was no stranger to such tricks; his past as an exorcist had taught him patience in the face of darkness. As Jane uttered the first incantation—Delfan Eoten Cor—aiming to rip the very heart from his chest, he bellowed "Undo!" Time twisted and broke upon his command, and the dark magic fizzled harmlessly into spectral dust. Jane staggered for the briefest moment, surprise marring her alabaster features. Geist took the opening with fierce determination, thrusting Doomsday forward. But swift as the night, Jane danced aside. With her fangs bared and ire roused, she countered with Motus, her telekinetic might slamming into Geist, sending him skidding across the cold, stone floor. The air crackled with energy as they fought, the cathedral itself echoing their enmity. Jane's spells were relentless—Ignalusa sent waves of fire roaring towards Geist, Ossox threatened to snap his neck—yet every time, Geist's shouted "Undo!" whisked him away from the brink of destruction. It was a lethal dance of magic and steel, each combatant driven by furious resolve. Through the tumult, Jane enacted Strangulo Ventus, seeking to squeeze the breath from his lungs. He faltered, knees buckling, visions of doom coiling ever closer. But Geist, with a soldier's tenacity, roared his defiance, breaking free from the unseen snare with an emphatic "Undo!" And with that defiance came his assault, unyielding, relentless. He made one last feint, baiting Jane into a deadly thrust. "Somnus!" she cried, attempting to lull him into sleep. But the spell dissolved in the air as he reversed its effect with another "Undo!" In that crucial moment, Geist's blade found her heart, piercing through cloak and flesh with the cold kiss of death. Winner: Geist the Bloody Geist's mastery over time with his "Undo" ability prevailed against Jane's formidable spells. Despite her superior speed and ancient magic, she couldn't overcome Geist's ability to turn back time and nullify her most threatening attacks. It was Geist's tenacity and strategic patience that seized the day, proving even vampires fear the march of time's reversal.