OK, really, don't let this thing die, please.
Editing in progress.
"Vampyrus Morphum!" Cried Kain. Raising his arms and blade high above his head, Kain began to glow in a scarlet sheen of light. Then, his sword burst into sanguine flames, which travelled downward from his hand onto his arm, onto his body, and onto his feet. It was very similar to Jonathan's own transformation to True Form, but he doubted that Kain could transform into something even remotely as terrifying as the Master of Darkness.
A pair of black wings burst out of Kain's back. Unlike Jonathan's, Kain's wings had no draconic scales; it was leathery and streaked with red, the wings of a vampire bat. His black hair became longer and wilder, while his fangs grew long and feral. His robe morphed into red scale armor, decorated with black spikes. The red flames then dissipated, fully revealing Kain's new form. His pale skin was now covered in ancient red glyphs, radiating powers of blood and darkness.
Jonathan was impressed. He was able to turn himself into a semi-demonic form, but it was only because of the demon blood inside himself. Normally, full vampires should not be able to transform at all; but Kain was right in front of him, black wings spread wide, radiating power than no normal vampire should have. Was this the power of a Vampyre, one with blood relations to Incarnate?
"Impressive," Jonathan smiled, "but it is not going to save you." Effortlessly, with only a casual flick of his will and no summoning of power, Jonathan's black robe transformed into his black armor lined with red. His long black cape billowed behind his back, then twisted and turned into a pair of black draconic wings. A slender tail sprouted out of his back; his red hair became longer, and two black horns grew on the sides of his head. His sclera now pitch black, Jonathan looked into Kain's eyes and laughed coldly. The whole transformation had taken only two seconds, about four times faster than Kain.
Kain twisted his face in disgust. "Wretched halfblood, your very form is a mockery to the purity of the vampiric race!" Raising his sword, Kain charged at Jonathan, almost twice as fast as before. But Jonathan could see his movements easily, and he parried. The two vampiric blades clashed again, hissing with power as their masters tried to overwhelm each other. Jonathan and Kain continued to pump energy into their swords, and sparks and tendrils of black and red energy lashed at each other, trying to drain the other of its essence. Jonathan gritted his teeth; damn, but Kain was stronger than he thought. Much stronger. But Jonathan was not about to lose; he would not lose his honor, and most of all he would not lose Nyxia. With a grunt, Jonathan pushed Kain back with a burst of darkness.
As if sensing Jonathan's growing worry, Kain smiled savagely. "I'm stronger than you thought, eh halfling?" Pointing the tip of his sword at Jonathan, Kain shot forth a bolt of crimson power surrounded by black lightning; the bolt was twice as wide as his arm. Jonathan's blade crackled with red lightning as he raised it, and brought it down upon the bolt in a single cleaving motion. The bolt was cut cleanly in half and dissipated, but Jonathan cringed in pain. The bolt had stung his hand.
Kain's grin widened in sadistic glee. "Prepared to be shocked once again, halfblood!" He spread his leathery black wings to their full span. Jonathan watched, wide-eyed, as the thin red veins in the black wings spreaded out, turning the wings more red than black. When the wings were almost completely red, it suddenly started to bleed; then pieces of the leathery material began to break off. The broken pieces twisted and reformed, turning into voracious red vampire bats, thirsty for blood.
Bats? Jonathan frowned. Kain did not summon those bats; he created them out of his own body. How was that possible? Jonathan did not know how to do that himself. But Jonathan did not have time to think, as the scarlet bats shrieked and lunged at him.
Jonathan folded back his wings and tail, so that he would be a smaller target. A single red bat dived at him, but Jonathan pierced its heart with a single blow. He was surprised when the dead bat melted into red liquid, which was then absorbed into the black surface of his blade. Blood, Jonathan thought. Kain is creating those bats out of his own blood.
But the knowledge did not help him, as swarms of crimson bats were constantly being spawned from Kain's wings. The bats rushed toward Jonathan, intent on draining him to an empty husk. Lengthening the spikes on his wings into tentacles, Jonathan lashed out at the bats, absorbing their constituent blood into himself. But even a sword, eight tentacles and a tail was not enough, because the bats were too many; Jonathan twitched in pain as the bats tore into the membranes of his wings, draining his blood and creating even more bats. Luckily, Jonathan was not in danger yet; when the bats sucked blood out of him, he also destroyed the bats and sucked their blood into himself.
"So you have figured out my secret, eh?" Kain's smile widened, showing his long fangs. "You will fall, Jonathan Haemos Shade. You have no chance against Kain, the Blood Master!"
Jonathan laughed inwardly at the irony. Kain would certainly not be smiling if he learned what Jonathan was the master of. Concentrating his powers, Jonathan let out a powerful ripple of dark energy. The wave of blackness engulfed the bats, and melted them into nothing. "Blood Master or not, you will not defeat me, Kain."
Kain snarled. "We'll see about that, halfblood!" Bats stopped forming out of his wings. Instead, his wings began to glow red, as did his sword. A strange hissing sound was emitted from his sword and wings. Then, like boiling water, a steam-like but blood-red vapor began to form from the red surfaces of Kain's wings and blade. It expanded rapidly, and filled the space around Kain. Raising and spreading his wings, then bringing them down in a powerful fanning motion, Kain created a powerful gush of wind that blew the crimson vapor outward. With alarming speed the gas spreaded out, filling the vast space of the colosseum.
"Behold, my Blood Veil!" Kain shouted as the red mist began to surround Jonathan.
Done.
BTW, if you haven't figured out already, Kain's wings are made of blood. The entire creating bats from blood thing is also copied from Shaman King. If I remember correctly, the character's name was Boris Tepes Dracula, a descendant of Vlad Tepes Dracula; he manipulated blood to mimic the powers of a vampire.