The battlefield remained in flux, the very fabric of reality shifting around them as the Harbinger of Null regained his composure. His wings unfurled, blotting out the horizon as his voice echoed across dimensions.

"I offered you the chance to witness the new order," the Harbinger intoned, his voice layered with countless tones, like an orchestra of despair. "You rejected it. Now you'll be erased along with this broken reality."

Kei planted her blade of frost into the ground, her aura shimmering with the icy blue of her awakened power. "We're not going anywhere! You're still in there, Lucifer—I know you are!"

The Harbinger's eyes flickered, a subtle crack in the overwhelming void energy surrounding him. For a moment, a spark of hesitation appeared.

Ignis, flames roaring around her, seized on this. "If you're so far gone, why did you hesitate just now? You're fighting it—we can see it!"

Wonder Woman stood beside them, her golden armor glowing with the radiance of Olympus. "Lucifer, you are more than this power. You were always a guardian, even if it wasn't always clear whose side you were on. Don't let this destroy what's left of you."

The Harbinger's form shifted, the jagged void energy retracting slightly, revealing his original angelic silhouette. "I... cannot control it..."

The Dragon's Residue

Batman's voice crackled through the comms from the Watchtower. "The energy levels are stabilizing, but the void presence is still growing. Whatever the Harbinger absorbed, it's trying to expand its influence. If it breaks free again, there won't be a way to stop it."

Superman, bloodied but still standing tall, wiped the corner of his mouth. "Then we don't give it the chance. We've already weakened him—let's finish this!"

Flash, his aura now surging with the multiversal energy he'd unlocked earlier, zipped beside Superman. "I can try a Speed Force trap, but it's going to take everything I've got to keep him contained."

Kei stepped forward. "Not alone. Ignis and I can anchor your Speed Force trap with elemental barriers. If we can push the void energy back into its own dimension, maybe Lucifer can break free of its control."

Batman cut in, his tone sharp. "It's a risk. If you fail, you might get pulled in with him."

Kei glanced at Ignis, who gave a fiery grin. "When has that ever stopped us?"

The Free-for-All Becomes Unity

As the Harbinger surged forward, the heroes launched into their coordinated assault.

Flash began running, channeling his Speed Force energy into a vortex around the Harbinger. "Gonna need some cover here! He's not exactly sitting still!"

Superman and Wonder Woman engaged the Harbinger directly, trading blows that shook the earth beneath them. Wonder Woman's lasso flared with divine energy, wrapping around one of the Harbinger's wings and forcing him off balance. Superman used the opening to deliver a thunderous uppercut, staggering the entity further.

Kei and Ignis began their work, their powers weaving into an intricate elemental barrier around the vortex. Kei's frost created crystalline walls that shimmered with an otherworldly light, while Ignis's flames coursed through them, adding explosive energy to the structure.

The Harbinger roared, his void energy lashing out in waves. "You think this cage can hold me? I am beyond your comprehension!"

Kei smirked, her aura glowing brighter. "Maybe. But we've got a lot of experience with breaking the rules."

Breaking the Void

As the Speed Force trap solidified, the Harbinger's movements slowed, the void energy visibly recoiling from the combined might of the heroes.

Lucifer's voice, strained and filled with pain, broke through. "Kei... Ignis... You need to destroy the core. The void will never let me go. You have to end this."

Ignis hesitated, her flames flickering uncertainly. "There has to be another way! We can't just—"

Lucifer interrupted, his tone firm despite the agony. "There is no other way. If you don't, I'll consume everything."

Kei, tears freezing as they rolled down her cheeks, tightened her grip on her blade. "I'm sorry, Lucifer. We won't let your sacrifice be in vain."

The Final Strike

As the vortex reached its peak, the heroes prepared for the final attack. Superman and Wonder Woman poured their remaining strength into reinforcing the barrier, while Flash kept the vortex stable.

Kei and Ignis summoned their full power, their elemental auras merging into a swirling storm of fire and ice.

"Together," Kei whispered, her voice steady.

Ignis nodded, her flames roaring brighter than ever. "Together."

The two launched their combined attack, a radiant beam of frost and fire aimed directly at the Harbinger's core.

The impact was blinding, a surge of energy that engulfed the battlefield. The void energy screamed as it was torn apart, and the rift above began to collapse.

The Aftermath

When the light faded, the battlefield was eerily quiet. The rift had closed, and the void energy was gone. The Harbinger's form lay on the ground, flickering between Lucifer and the shadows that had consumed him.

Lucifer's voice, faint but resolute, broke the silence. "Thank you... for freeing me."

His form dissolved into light, leaving behind a faint echo of his presence.

Kei fell to her knees, exhaustion washing over her. Ignis knelt beside her, placing a hand on her shoulder.

Superman and Wonder Woman approached, their expressions somber but resolute.

"We did it," Wonder Woman said softly.

"But at what cost?" Kei whispered, staring at the spot where Lucifer had vanished.

As the heroes regrouped, the sky above cleared, revealing the stars once more. For now, the universe was safe—but the scars of the battle would remain.

To Be Continued...