Bad-ass royal family idea...
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Okay, things were bad, really bad. His cousin was weak from imprisonment, his mother was in a Changeling snot-balloon, his aunt was probably still asleep in her sound-proofed chambers, the girls were captured reying to get the Elements, and Shining looked like his brain had gone bye-bye.
Things weren't hopeless, oh no, Spike still had an ace up his sleeve, but it was an ace he was very reluctant to use. Not because it wouldn't work, oh no, it would work, and those bugs would be sorry they even LOOKED at Canterlot...
But, really, Blueblood wouldn't let him live this down for years. Dash probably wouldn't either if Spike weren't sure she'd almost wet herself out of fear from what Spike was about to do.
Standing among the wedding guests, Spike looked at the nearest Changeling Guard, and said the first thing he thought of, "So...how's your sex life?"
Yeah, it was awkward for Spike, but the point was to make it so for the guard too.
Little lesson on Changelings. Normally, your average changeling is as intelligent as your average pony, some are smart, some are dumb as a certain pair of unicorn colts.
However, during war or when war is on the horizon, a change is made to the larva in the changeling hatchery as they develop into drones. Instead of normal changelings, they end up as a sort of "soldier drone", a drone with little to no free will, and not much of a thought process, all forgone for a stronger connection to the subconscious hive mind connection to the queen and quicker development to maturity. This could work out to be an advantage, both in battle, where the soldier wouldn't think once, let alone twice, about dying for the good of the swarm, but in espionage too, as it allowed them to better imprint the persona of the pony they were copying, not having any personality of their own to interfere.
Sometimes, in the event of a large enough war, the queen would hoof-pick a select few larva to be a higher class of soldier, a sort of commander, let's call them Cerebrates, who would lead divisions of soldiers and take mental stress off of the queen.
However, the force needed to take Canterlot was, actually, relatively small, meaning no Cerebrate was needed, so the Changeling Spike spoke to, let's call him Chuck, answered with an always intelligent growl that bordered on a "Huh?"
But, it didn't really matter what Chuck said, Spike just needed it to open it's mouth. Slipping his arm between it's fangs, he brought his knee up and slammed the jaw shut enough for the fangs to punch into his hide, then screamed as loud as he could.
"OOOOWWWW, MOMMY!"
Chrysalis looked over to see what the ruckus was. The baby dragon, what was it...Spook? Spock? Whoever he was, one of her soldiers apparently bit him. Why was a little dragon here anyway? She'd wanted to ask, but couldn't since Cadance would probably already know. Any question she was going to ask was cut off by a rather large explosion directly behind the Changeling Queen.
Another little lesson about Changelings, they have a type of empathy. In much the way a normal pony's sense of smell would lead them to food or the like, and recognize what said food was, this empathy lead the changelings to food or away from danger, and was especially useful to the Queen, who had access to a sort of genetic memory from past queens.
So when a certain feeling came across her empathic senses, it triggered big warning signs. It was a strange mixture of love, devotion and blind rage with a slight dash of fear, it was the feeling of a mother ready to fight to protect her child (Something a past queen had learned was not to be underestimated when an earth pony mother had killed her, certain lessons tend to stick when you have the memory of your head being bucked in).
Chrysalis' mind did the math...a small dragon cried for it's mother, and now she felt like death was just over her shoulder.
...Okay, she can do this, she beat Celestia, she can beat an angry dragoness...
Then she felt something else...There was more than one being behind her...more than two, even,
Are dragons polygamous?...
...
Buck me...
She didn't want to look...
She didn't want to look....
She didn't want to look.....
She didn't want to look......
...Buck, she looked, and only her many years as a composed queen kept her from messing the floors...
Luna looked like she had just jumped from bed, red eyed and angry, the stars in her mane glowing an ominous red.
Cadance looked nothing like a pony who had been half starved and imprisoned in a cave for weeks. In fact, she looked nothing like the "Princess of Love" she was supposed to be, or the broken prisoner Chrysalis had been hoping to drag out of the caverns, but more like a hardened prisoner ready to shank a bitch.
Blueblood...Was that Blueblood? He looked nothing like the hedonistic, pampered little whiner she'd known and loathed. And where did he get the armor? Or the big honkin' sword? He looked like he should be out slaying demons to a heavy metal track.
But Celestia, oh, she looked pissed...supremely pissed...like glowing eyed, "I am about to sodomize you with an astral body" pissed as her mere magical presence burned off any remaining mucus.
"What. Did. You. Do. To. My. Baby. BOY!?"
Oh Buck me sideways.
She may have taken on Celestia before, but this, oh no, Chrysalis was ambitious, not stupid.
"I sur-" was a close as Chrysalis got to raising the white flag before a pink hoof knocked her across the room and into a wall.
"You seal me in caves, ruin MY wedding, try to take MY husband, and now you dare, YOU DARE to hurt my little cousin!" Cadance almost reached RCV levels of volume.
"Hold, Cadance," Celestia halted her niece.
Oh, thank what ever powers were watching over the Changeling Queen for the mercy of-
"After all, he is your cousin, but Spike is my son," Celestia growled as she approached the changeling...
Buck you, Powers that Be, buck you right in the balls...
What happened in the following fifteen minutes would never be written of, out of sheer horror. Hell, the things Luna had done with the Royal Canterlot Voice alone would haunt the nightmares of the obervers for the rest of their lives.
When the Royal Family was finished, the non-changeling guests were rooted to where they stood, save for the many who had passed out. The changelings had become new displays of modern art upon the chapel walls (making some interesting shades of green), except Chuck, who seemed to cease to exist in a flare of brightly colored light. The Royal Family was gathered around their youngest member, coddling the young dragon who kept insisting he was fine.
The Changeling Queen sat, quivering in pain, her voice having given out within the first few minutes, her legs broken, her carapace covered in cracks, oozing green blood, her horn, well, it had already been twisted, so the royal sisters had taken their time in bending, breaking and reforming it into a straight horn like their own, a process that was excruciatingly painful.
Chrysalis twitched as a shadow was cast over her, Celestia glaring down at her, "Oh, don't worry, you won't be dying today, I have better ideas for you."
Across the hall, the Elements of Harmony looked at the aftermath in horrified silence.
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And I think that would lead to this, shortly after my earlier post...
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Garble stared down the little whelp who had been stealing all the chicks, ready to give the purple punk a beat down.
"Sir, I have your rubies," A voice brought the dragons attention from the little Casanova to a strange, hole filled dragoness carrying a bowl of the red gems.
"Thanks, Chryssy." Spike said as she set the bowl on his piano.
"Of course." The dragoness bowed.
"Alright, who the heck are you?" Garble growled.
The black dragoness shifted her attention, her expression changing from docile to a glare that made the male dragons flinch, "I am Chrysalis, queen of the changelings and vassal to his highness, Prince Spike Dragul-Solaris, and I will say if you act on your negative emotions...
I. will. END. YOU!