After a lifetime's work, and so many sacrifices, Ember had finally attained her goal. She stood at the heart of the dormant volcano, Mount Nazzad, on a black stone platform suspended by enormous chains above bubbling magma. Before her glimmered a very large ruby on a pedestal. Within it, she knew, slumbered the immense power of Zad the Stoker of Passions, sealed within this mountain, and the key to her revenge against this kingdom.
Taking a deep breath, she placed a wrinkled hand on the ruby's surface. It was nearly burning to the touch, but she grit her teeth. She felt power pulse from the ruby, course through her arm, surge into her body, and...
It had been thousands of years since Mount Nazzak had rumbled like this, causing miles and miles of land around it to tremble. Across the entire kingdom, the sound of a woman's triumphant laughter echoed. The top of Mount Nazzak roared thrice as luminous, red cracks formed one its surface.
Crack.
Crack!
CRACK!
The mountain exploded, showering the surrounding countryside with flaming boulders. The farmers and villagers who didn't immediately turn and run could see, amidst the black smoke the mountain belched, the upper half of a glowing humanoid figure rising, glowing the color of flame.
Ember, who was still laughing, had been reborn as a living inferno. The joy Ember was feeling was beyond human. Elemental. Apocalyptic. Black clouds seeded by the mountain's ash swirled overhead, and peals of thunder greeted her arrival. Rain, as if cowed by her firey might, didn't dare fall just yet.
Her figure, only looking faintly humanoid at first, coalesced into a more defined upper body. Ember's grasp of her new power improved. She WAS the mountain now, and could mold her molten stone body however she wanted. Instinctively, she had given herself the form her human body had had in her youth, but in naturally more godlike proportions.
Her face was beautiful and terrible, of course, with eyes of literal flame, red-hot lips and a skin of smooth stone. It cracked and shifted along with her movements and expressions, but always resolved itself into a statue's simple beauty. Her hair was glowing the brightest of all, having semi-solidified into a cascade of liquid curls, always gently swirling as they pulsed with firey light.
Her limbs were slender, though with obvious muscle definition highlighted by the contrast of orange molten rock and solid black stone. Ember swiped with her arms to clear away what remained of the mountaintop still, as well as pull herself up higher from the mountain she had just hatched from.
Her breasts were... Well, she had decided to be indulgent. Her lava form was in her full nude glory, and her breasts of her youth had been her pride, the largest and perkiest of her home village, before her age had taken its toll. She crossed her arms beneath her bust, squeezing it up, welcoming its return. Large nipples stood proudly, literally rock-hard.
She then had an idea. As she continued to extirpate herself from the mountain, she leaned out of the volcano's opening and rested her bust atop the crumbling rock, where brush caught aflame even if she didn't touch it directly. She scooped stone as it crumbled away and, instead of letting it tumble to the ground below, swept it all towards her chest, where it was all swallowed up, melting in an instant.
The sensation was delicious. Ember could feel every stone devoured by the inferno that was her body, and each one felt nourishing in an exilarating way. She watched as her breasts spilled further forward as she continued to drag massive stones into them. Soon her bust extended past her extended elbows, and she deemed it enough for now.
She rose back, her now obscenely-proportioned breasts rising up in continued defiance of gravity. She had never seen a human woman with a chest even approaching that size before, even without taking into account her gigantic body. But then, of course, why would she, a newborn goddess, limit herself to human standards of beauty? She was feeling incredibly powerful and, to make an obvious pun, smoking hot right now. That was all that mattered to her.
She then noticed, in the horizon, cows in a field, placidly grazing. An amused thought crossed her mind as she looked down to her colossal rack. Experimentally, she squeezed her breasts together with her two hands.
She let out a scream, tiny for her but no less cataclysmic for the people watching, as jets of lava squirted out of her titanic teats, spilling to the foot of the mountain and setting the trees there ablaze in an instant.