Peri's Remote (Patreon)

Brilliant!  Genius!  Her magnum opus!

In her hands, Peridot held the key to a problem she'd suffered for far too long:  the inability to shapeshift.

After surmising that it wasn't a physical limitation but a mental one, she was met with two choices:  Train slowly but surely, starting small and working her way up until she can shapeshift naturally...

...or she could make a device that not only allows her to shapeshift, but theoretically override others' forms by her will.

And that's how she found herself holding such a tool (or weapon, depending on who you ask) in her hand!

Once she scanned her gem both as the guiding mind and the recipient, the display on the device buzzed to life with a static sine wave.  When she thought about her form changing but didn't press the button, the wave began to vibrate a bit, but nothing happened. Good.

Now, what to start with...  her brain flashed through various ideas:  The slim, elegant form of a Pearl;  the brash and bulky form of an Amethyst;  the muscled hourglass of Garnet.

But no, she'd go for something more unique.  Her ideal form!  The wave on the device began to vibrate intensely, and even before she pressed the button she felt her gem heat up ever so slightly;  seemed like she was set.

With a press of the button, the remote and her light form began to glow.

...and her curves began to swell.  Rapidly, at that.  Her outfit stretched and easily accommodated her growth as expected, but what she didn't expect was to become so voluptuous!  Her breasts wobbled violently, surpassing melons in sheer size and heft while her rear end grew out into a set of dual seat cushions for her to lug around.  Everything wobbled and shook as she grew, and yet as her thighs and arms thickened, she knew it wasn't done quite yet.

To round out the changes to her figure, her stomach bloated out with an admirable amount of pudge;  not so much as to overpower her other expanded assets, but enough to smooth out her ample figure.

Peridot's gem was burning even after the growth stopped;  residual heat from forced shapeshifting was a possibility she foresaw...  but as she felt up her rear and watched her palm sink into it, and squeezed her breast only for one of her newly-puffy nipples to explode in pleasure...

She wondered if that heat wasn't symptomatic of something a bit more...  naughty.

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Peridot finally finds a solution to her inability to shapeshift!  Be careful what you wish for, though...