The cavern was alive with chaos — jagged shards of rock falling like rain, illuminated by the electric blaze of repulsors and the eerie green crackle of Obsidian's dark magic.
Tony's armor gleamed beneath the fractured light, each scar telling a story of battles past, but his eyes behind the visor burned brighter than ever.
Pepper's gauntlets flared, veins of crimson and emerald energy weaving and writhing like serpents. Her breaths came fast — a storm raging within her.
Around them, Steve's shield gleamed silver, deflecting torrents of shadowy tendrils that whipped through the air like living smoke.
Natasha moved like liquid shadow, her precise strikes carving through the darkness, sparks flying as metal met dark energy.
Tony reached out, fingers trembling as he gripped Pepper's hand.
"Feel the light inside you," he urged, voice steady but desperate. "The light we built — from laughter, from hope."
The dark magic screamed — a piercing shriek that echoed through the chamber, shaking the very air.
Suddenly, Pepper's eyes blazed — a fierce, wild light that shattered the chains around her wrist.
With a roar, she slammed her gauntlets together, sending a shockwave of radiant energy that tore through Obsidian's dark veil like a comet ripping through a night sky.
Obsidian staggered, claws scraping the stone floor.
Tony's heart thundered in his chest.
But just as victory seemed near, the cavern shook violently — a fissure splitting the ground beneath their feet.
From the darkness, a new shadow emerged, larger, more terrifying — a silhouette cloaked in molten metal and glowing with a sinister red light.
The ground cracked open as the Leviathan stirred once more, its roar a deafening promise of destruction.
Tony gritted his teeth. "This fight's just getting started."