Title: The Journey Against Thanos

The portal opened once more, shimmering with Doctor Strange's magic, as the newly formed alliance—the Avengers, the cultivators, and the Survey Corps—stepped into the unknown. The air buzzed with energy, the transition between dimensions filling them with anticipation and unease. They knew their mission was monumental: to face Thanos and his army, and protect the multiverse from annihilation.

Arriving in the War Zone

The group emerged into a war-torn realm, barren and desolate, with fiery skies and crumbling landscapes stretching as far as the eye could see. Strange gestured to the horizon, where Thanos's fortress loomed ominously, surrounded by legions of his soldiers.

"Thanos is there," Strange said grimly. "His forces are vast, but his strength lies in the Infinity Stones. If we can separate him from the Stones, we have a chance."

Erwin, ever the strategist, nodded. "Divide and conquer. Focus on weakening his army and targeting the Stones directly."

Levi tightened his grip on his blades, his sharp gaze scanning the battlefield. "No mistakes. We finish this."

Wei Wuxian twirled Chenqing, grinning. "Well, this is officially the most epic thing I've ever done! Let's show them what we've got!"

Lan Wangji remained stoic but moved to stand beside Wei Wuxian, his presence steady as always.

Thor, his hammer crackling with lightning, laughed heartily. "Now this is a battle worthy of gods! Let's crush them!"

The Battle Begins

The alliance split into teams, each focusing on specific objectives. Levi led the Survey Corps and cultivators in holding the frontlines, their precision and unique abilities overwhelming Thanos's soldiers. Levi's blades sliced through the enemy with surgical precision, while Wei Wuxian's demonic energy bound and crushed groups at once.

Hua Cheng's silver butterflies tore through the ranks with razor-like efficiency, shielding Xie Lian as he fought alongside Lan Wangji and Luo Binghe. Their combined attacks devastated Thanos's forces, creating openings for the Avengers.

Captain America, Black Widow, and Hawkeye took the left flank, their teamwork and strategy flawless as they targeted key enemy positions. Iron Man and Strange fought from the air, using their technological and magical prowess to disrupt Thanos's defenses.

Thor and Hulk took the center, their brute strength clearing waves of enemies as if they were mere obstacles. "Come on, big guy!" Thor shouted, laughing as Hulk smashed through another group.

Erwin stood at the rear, coordinating the teams with his unparalleled tactical insight. "Keep moving! Don't let them regroup!"

Facing Thanos

As the teams pushed closer to the fortress, Thanos finally emerged, his imposing figure radiating power as the Infinity Gauntlet glowed on his hand. "You dare challenge me?" he boomed, his voice shaking the ground.

Levi, ever fearless, stepped forward. "You talk too much."

Wei Wuxian laughed. "Ooh, I like this guy."

Thor charged at Thanos, his hammer sparking with lightning. "Let's see if you can handle a god!"

The battle against Thanos was ferocious, his strength nearly overwhelming the alliance. Strange and Erwin worked together to create a plan to separate Thanos from the Stones, using the cultivators' abilities to counter his power.

Chu Wanning unleashed a wave of energy that momentarily disrupted Thanos's grip on the Gauntlet, while Hua Cheng's butterflies swarmed him, creating a blinding barrier. Levi and Captain America struck together, their precision forcing Thanos to retreat slightly.

The Final Push

As Thanos weakened, the alliance made its final move. Strange and Iron Man targeted the Gauntlet directly, while the cultivators and Survey Corps held the lines. Lan Wangji and Wei Wuxian combined their powers to create a devastating attack, while Thor and Hulk struck with brute force.

Finally, with one coordinated effort, Thanos was stripped of the Infinity Stones. Strange sealed them away, their energy dispersing into the multiverse safely. Thanos roared in frustration, retreating into his fortress as his army collapsed around him.

Victory and Reflection

The group stood together, battered but victorious, their bonds stronger than ever. Levi glanced at Erwin, his voice quiet but firm. "We did it, Commander."

Erwin smiled faintly, his gaze steady. "Together, Levi. We couldn't have done it alone."

Captain America addressed the group. "You were remarkable. The multiverse owes you all a debt of gratitude."

Wei Wuxian grinned. "Saving the multiverse—no big deal!"

Lan Wangji gave Wei Wuxian a small but proud glance.

As the portal shimmered, the alliance prepared to return to their respective realms, their hearts filled with hope and camaraderie that transcended dimensions.