Vampire Overlord System in the Apocalypse

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After he killed the Heroes of the Aquaias Kingdom, Noah acquired their souls, which he repurposed and merged with his Lifeblood Jewel, bringing forth the ability to summon them as the Twelve Dragon Heroes! Of course, the ones he had were more than enough, and he couldn't summon more than 12 at the same time, so he simply had to do something very easily, replace one of them for the one he wanted to use.

Amidst the new Heroes he got, there was one with a very powerful asset and ability, a Hero Unit not only with the power to boost all dragons defense and offense, but also having the power to summon its own troops by absorbing the energy from the enemies around her!

He quickly replaced one of the Twelve Dragon Heroes, bringing forth the Nature Heroine of the Aquaias Kingdom, who had the shape of a giant feathered and winged snake with a sharp golden beak.

This new heroine brought with her a new playstyle for Noah, as he quickly placed her around the table that represented the war going on, the Nature attribute was also pretty effective against Earth Attribute, so he immediately decided to spend a large chunk of divine energy into her, giving her new power and also the ability to ensue her powerful abilities!

"I-I am back?" she wondered, looking everywhere. However, the mind and commands of Noah were supreme, she could only wonder why she was here for a few seconds before she was made to obey immediately. Her powers surged across the battlefield as the other Dragon Heroes protected her.

Rockernn, the Evil Dragon God of Dark Underground Depths, noticed the new arrival of Noah in the battlefield, or well, one of his clones, alongside a new and powerful Hero that was actually from the Aquaias' Kingdom! He quickly realized that Sadratonn, the Evil Dragon God of Abyssal Seas, had suddenly lost! His massive army of Divine Beasts was growing smaller and smaller as Noah's Undead Army led by the Seven Deadly Sin Generals were massacring the Water-type divine beasts.

Now, Noah concentrated his forces into his own army, which had been stalling for time thanks to their amazing defenses and great resilience and sizes. But now, with the arrival of a nature-attribute hero, this was only going to last for long!

"W-What is that Hero?!" wondered Rockernn, as he glanced the massive, winged snake roar loudly, a massive domain of nature was erected around her, combining with the domain of dragons that was boosting her power amazingly.

FLASH!

And then, several roots began to grow from the ground, catching the Earth-type divine beasts who were weakened by the army of Noah, and entangling them! They were left alive, but their power was constantly being drained and were immobilized, fueling her with energy.

FLASH!

Another flash of bright green light emerged from her body, as the many roots that she summoned began to entangle more and more earth-type divine beasts one after another! They were all being immobilized and drained of all their divine energy, as Noah felt like this Hero was way too broken compared to the others! Her great weakness was fire, which was a very common element amongst dragons, but this entire army of divine draconic beasts were all earth-type and could not bring forth flames as it was not their element.

"I-Impossible! What kind of Hero is this?! I didn't knew Aquaias had it! Wait! How did this being got it if it was killed… does he has death magic to revive the dead? What kind of powers did he employed to revive this hero and… bring it forth with all its original power, if not even larger than ever before?!" wondered Rockernn, as Noah made him look like a fool!

Now, his resilient and slow army were becoming easy pickings for the Nature Heroine, who was actually named Efarinna, Noah decided to remember her name because he was going to employ her powers way more than any other of the Dragon heroes he could summon, most likely.

"Efarinna, do your specialty now!" said Noah, ordering her as he roared loudly, the Dragon King's Roar effect activated too, working as a powerful Rally Buff that enhanced all his troops once more, making them fiercer. They began to quickly weaken more and more divine draconic beasts, letting her catch them and make them the fuel for her next movement.

Efarinna's ´power wasn't good individually, but her power was around the ability to conjure new soldiers made of absorbing energy, she was a factory of energy-draining power for Noah, and also of new plant-type soldiers.

FLASH!

She summoned a massive tree after accumulating enough energy, as it began to grow in just a few second high into the skies! The evil dragon god controlling the enemy army was left speechless once more, looking at the scene in utter disbelief. 

"Come forth!" said Efarinna, as the tree opened a large gate, and massive dragon-shaped beings made of wood emerged, they all emanated a strong God-Realm Auras! Thanks to being fused into the lifeblood jewel of dragons, Efarinna gained the power of a god too, and all her summons… as well!

More and more Nature Dragon Units continued to come one after another, Noah glanced at the scene with utter fascination as he laughed, the energy gathered around the tree and continued to fuel it with divine energy. The power of the tree grew larger as more beasts continued to emerge. Alongside the Undead and the few Elemental Dragons led by Demise, there were now the powerful Nature Dragons, which were also boosted by the domain of dragons created by Noah!

"T-This…!"

The Evil Dragon God looked at the scene in utter disbelief as he saw how the army of Noah suddenly gained a new ally with the power to overpower earth-type divine draconic beasts. These nature dragons all held God-realm powers too and began to massacre his army!

CLASH! BOOM! CRASH!

Noah glanced as his army continued to advance further, but the Heroes of the opposing side were also advancing, they needed to be taken care of with caution.

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