Canterlot's Ivory Tower
Twilight Sparkle stretches, feeling her spine crackle pleasantly- and casually attempts to teleport downstairs to see her friends.
Two things result- one, a flare of magic spreading from her wings is more than enough to reduce her blankets to a spray of rags and tufts of feathery down.
The second is Twilight Sparkle realizing said wings are now clad in delicate, crystalline "feathers" instead of the real thing.
Downstairs, four ponies look at each other and realize nopony had told Twilight she really sparkled now.
Whinnatche, western Equestria
Flim and Flam grin as they start up the Super Cider Squeezy 6300, anticipating an easy win. The entire farm crew not only got in on their sucker bet, but caught a nasty stomach bug. Trying to catch up with the SCS's last two days worth of production hasn't worked out very well while half of them are doing their best impression of green apples in bed...
The slightly germ-infected "free cider samples" they'd given away last week had nothing to do with that, of course.
Grinning, Flim engages the gem matrix and powers up for the third and final day to finish it off, rake in a lovely deed to forty acres of prime farmland, and come out of it with the pile of bits they so richly deserve.
The enchantments fail, catastrophically as the SCS propels itself like a rocket through seven Red Delicious trees, a fence, a barn wall, the opposite barn wall, and into a pigsty. It's passengers spend the next three months in the jailhouse hospital- wearing a fashionable combination of body casts and inmate stripes.
LaGaitia Airship Port, Manehattan
The airships were at 100%.
One hundred percent "out of service". Crowds clamored in long lines for refunds as the only flights in and out were pegasus-powered small chariots. Mechanics scratched their heads as propeller shafts and engine parts came out fouled with crystalline growths gumming up everything- at times, even growing straight through parts to fill every lubricated surface with stony grit the second someone tried to get the things moving. The more spells a part had on it, the worse the "glittergunk" got...
30th Street Station, Fillydelphia
Minty Franklin pulled the throttle open gently to coax his cargo of Royal Guardponies into motion. The firebox warmed as the coal inside heated up nicely, black smoke filtering into the anti-smog spell built into the smokestack...
...and the fire followed the smoke out , spinning in a frozen lick of cherry red as it floated down the track. An occasional ember dripped off the glowing mass, but other than that the elemental ball of flame seemed quite happy to just be on it's way. As the engineer watched, the fire elemental drifted around a corner with a final spiral and vanished down the southbound tunnel.
Nobody believed him until a second attempt burped another living flame into the train, where it calmly floated through six cars of Guard before *popping* out of reality.
The regimental commander opted to march out of Fillydelphia on hoof instead.
The Everfree Forest
As rocks go, Tom had led an interesting life. I mean, how many rocks do you know get to be one of Discord's props, fought over by the Elements of Harmony, and then used to seal off a pool of immense magical power just in case Pinkie Pie had another REALLY bad idea and decided she needed another dozen Pinkies to help out?
Well, it'd have been interesting if Tom was anything animated, anyway. Rarity and Pinkie Pie aside, most of Ponyville wasn't in the habit of talking to rocks, and Tom really wasn't much for talking back anyway. He was, aside from the occasional chaotic glamour tossed his way, just an ordinary chunk of stone.
This was about to change. Tom actually gleamed a bit in the afternoon sun. Well, it was the sandy bits of crystallne debris that had ended up falling from the sky and landing in his cracks- but it did add a nice bit of flair. Very micaline.
It also added just enough weight to weaken the already eroded edges of the hole Tom had been jammed into, sending the rock rolling down a smooth ramp to *splash* into the waters below. I mean, immersing a rock with chaos magic residue coated in the remnants of an ancient arcane artifact into the waters of a magical pool with enough energy to give a dozen major ley lines a run for their bits would be totally harmless. Right?
The resulting earthquake wasn't much- about a 3 on the Richter scale, just enough for a few ponies in Ponyville to think that Pinkie Pie had been test-firing that new Super Duper Party Cannon again. (For the record, she's gone straight to working on a Super Duper Scrumpalicious Party Patty Cake Cannon, and it is as delicious and dangerous as you might guess from the name.). The results? Well, magical.
The chamber formerly occupied by Ms. Mirror Pool and Mr. Tom Rock now was filled to the brim (and indeed, a few over the top) of Tom-sized, humming, floating, blue-glowing crystals that rather resembled Rarity's flank, if you'd jazzed them up a bit with some cutie mark polish. Occasionally letting off the odd bubbly mote of enchantment, the herd of Tom's progeny did what you'd expect of a good bunch of rocks. Absolutely nothing else.