Nie Yan obtained a seventh-tier crystal core for the first time; the highest he had obtained before was only a fourth-tier crystal core. Moreover, this crystal core was unaligned, meaning any creature could consume it.

Taking out the Dragon Crystal, the Gold Dragon was completely finished.

After Nie Yan obtained this seventh-tier crystal core, the Darkwing Dragon released its claws, and the Gold Dragon's corpse quickly plummeted.

Nie Yan stretched out his left hand and shot out a strand of spider silk, sticking it to the Darkwing Dragon's body. He somersaulted and jumped onto the Darkwing Dragon's back.

The Darkwing Dragon carried him away at high speed.

The bloody aura in the sky quickly spread. Several large flying creatures rapidly approached, including the ninth-tier Golden Eagle from earlier. Watching those large flying creatures pouncing over, Nie Yan felt anxious. At this rate, the Darkwing Dragon would definitely be killed by them. He chanted a spell, and after a moment, the Darkwing Dragon suddenly disappeared, having been recalled to his pet space.

Nie Yan leaped and jumped onto the rock wall of the Fortress of the World's Heart. The large flying creatures missed their target and circled around for a moment. Not finding Nie Yan hidden in the vines, they swooped down towards where the Gold Dragon had fallen.

Seeing the large flying creatures fly away, Nie Yan dared to emerge from the vines, breathing a sigh of relief. He then climbed towards the entrance of the World's Heart.

Nie Yan was like a gecko, his limbs adhering to the rock wall as he moved quickly. After more than two minutes, the entrance to the Fortress of the World's Heart was almost within reach.

Nie Yan jumped up, steadied himself at the entrance, and looked inside. The interior of the Fortress of the World's Heart was a huge space. The top was about fifty or sixty yards from where he stood. Being in this vast space, Nie Yan felt his insignificance, as if he had arrived at an ancient temple. He walked towards the inside of the World's Heart. There was no light around him, and it was quiet. The sound of his footsteps echoed into the boundless distance.

Because of his Dark Vision, Nie Yan could see an area of about fifty yards around him, all of which was flat ground and empty. After walking forward in the dark space for about thirty minutes, a huge spherical crystal appeared in Nie Yan's field of vision in the distance.

This huge spherical crystal was as big as a small hill, suspended more than five yards above the ground, emitting a blazing white light, burning like the sun, and radiating turbulent energy outwards. This was the legendary World's Heart, said to be the source of all magical elements and divine power!

The closer he got to it, the warmer Nie Yan felt all over, enveloped in a white light. His thoughts seemed to have entered another space. A voice was calling him, and Nie Yan involuntarily walked towards the World's Heart.

At this moment, a crisp system notification sounded.

System: You have arrived in the Space of the Gods and discovered the ancient World's Heart. It floats here quietly, eternal for ten thousand years, longer than any life. Comprehend its power and feel the call of the gods.

Nie Yan's thoughts seemed to be drawn away, flying across the entire universe. Countless images flashed through his mind, gradually turning into a vast emptiness. A voice rang in his mind. Nie Yan didn't know what it was saying, but he felt that the voice was extraordinarily solemn and peaceful, eliminating the distracting thoughts in his heart.

After an unknown amount of time, another system notification sounded.

System: Do you decide to accept the guidance of the gods, transform into a Holy Shadow Dancer, follow the will of the gods, and cleanse the world of all evil?

Receiving this system prompt, Nie Yan's heart skipped a beat. He could already transform into a Holy Shadow Dancer?

He was really surprised to have transformed so quickly. He couldn't help but feel ecstatic and clicked confirm without hesitation.

A dazzling white light shone from his body. Then, a series of brilliant rays of light condensed on Nie Yan's left shoulder and gradually merged together.

What exactly was happening? Nie Yan felt a little surprised in his heart. He felt that within this white light, a living being was being born.

After a while, a palm-sized figure slowly emerged. Nie Yan looked at it. It was a tiny angel. She was holy and beautiful, with bright eyes, wearing a pure white veil. Every inch of her skin was delicate to the extreme, and she had a pair of pure white wings on her back. The little angel hovered near Nie Yan's left shoulder, constantly flying.

Her eyes looked at Nie Yan nimbly and curiously, her eyes seeming to be able to speak.

"Holy Shadow Dancer Nie Yan, Karenna will become your guardian angel." The angel Karenna flapped her wings and flew around, saying, her voice was melodious and moving, like the sounds of heaven.

"Hello, Karenna." Nie Yan greeted Karenna and looked at her in surprise. He was really surprised by Karenna's appearance.

Nie Yan remembered that in his previous life, Xiao Mo wasn't by his side after he transformed into a Holy Shadow Dancer. He really had such a guardian angel, but he didn't know what effect this guardian angel had.

Nie Yan looked at his status. His title had changed from Grand Thief to Holy Shadow Dancer.

Nie Yan checked the rewards of the Holy Shadow Dancer. The Holy Shadow Dancer had three more powerful passive skills. One was Holy Healing, which increased the HP recovery speed of himself and all teammates around him by 300%. The second was Resurrection, which gave him a chance to revive after death. The cooldown time was two natural days. The second passive skill was Dodge, which could be upgraded. The first level increased the evasion rate by 20%, meaning that for every ten attacks Nie Yan received, he could evade two of them. Evasion could be increased to a maximum of 50%.

These three skills greatly enhanced Nie Yan's strength.

The additional state of the Holy Shadow Dancer was that all attributes were increased by 30%. In addition, as the first player to transform into a Shadow Dancer, Nie Yan could also go to the Thieves Guild to receive additional rewards.

Besides these, Nie Yan discovered that the mission of the Holy Shadow Dancer was not completed. Only about 30% of the Holy Shadow Dancer's abilities had been released, and there were some more missions in his mission bar.

Mission Progress 5: The undead and the Mo people in the underground have begun to stir again. Damn the undead and the Mo people. They have never stopped thinking about destroying humans. Go talk to the Archangel Tyrol.

Seeing this Mission Progress 5, Nie Yan was a little surprised. He actually had to go to the Archangel Tyrol. In the Greenland Empire, the Archangel Tyrol was an almost god-like existence. It seemed that the subsequent missions of the Holy Shadow Dancer were definitely extraordinary, related to the underground undead and the Mo people. Could it be a main quest that affected the course of history?