Prism squirmed in place, groaning softly as she felt the pressure building inside her with the creeping stone tightening, her hindquarters growing so heavy and still as the magic seemed to play her up to the edge of plateau, teasing her marehood with tingling unrelenting sensation before the stone caught up and froze her blushing lips in pristine marble, the teasing magical touch now preserved in the stone. The mare’s eyes widened as she realized this, biting her lip as a bead of sweat dripped from her brow, writhing in desperate need of release but unable to move anything beneath her hips.

The stone tugged at her tail as it grew heavy and limp behind her, anchoring down to the plinth and balancing her heavier form so solidly. Seconds seemed to last for minutes with the excruciating rapturous pleasure she was captured in as her hips creaked and froze up, the stone shifting upward and compacting her flesh like a pair of tight stockings several sizes too small, her new faded marble skin shining in the dim light of the hall.

Her wings stretched out in her inexplicable and permanent excitement as she felt her joints crackle and pop, ossifying in place from within as the stone rose, cool in stark contrast to the warmth from her body and feeling so heavy, so tight as though she were being immersed in a pool of liquid mercury. The mare’s writhing motions slowed bit by bit as her fur was subsumed beneath the stony surface of her rapidly petrifying body, color draining from her rainbow hued feathers and the tips of her mane that hung down against her chest.

Prism was about to plead for it to stop, but with a single sharp puff of air her lungs collapsed inside her, sending the mare into momentary shock and panic before she realized that her lungs had solidified, revoking both her ability and her need to breathe in the first place. A conspicuous stillness followed, the sudden lack of a feelin she had known all her life but never realized was there until it ceased; her heart beat. What would have killed any other creature did nothing to her, for as a creature now of stone… she had no need for a beating heart.

The trapped mare was up to her neck in stone, blushing so deeply with what was left of her fleshy body, neck growing rigid and solidifying in place before encroaching upon her ears. The sound of the stone’s advance grew ever louder as it squeezed around her neck and head, grinding and crackling, building to a dull roar within her head as she winces, biting her lip in unreleased frustration below and the ominous realization of her predicament. In a mere moment the sound began to fade away as it passed over her ears, which stood perked and still, her sense of hearing greatly diminished, reminding her of how she heard when coming out of a swimming pool as a foal, ears filled with water that muffled everything around her.