This day has been just perfect~ The kind of day of which I've dreamed since I was small. Everypony I'll soon control! Every stallion, mare and foal! Who says a girl can't really have it all?
— Queen Chrysalis
Written by Meghan McCarthy
Twilight finds herself in a dark cave, magicking up a light from her horn, wondering where she is.Cadance's evil laughter fills the air heralding her appearing and vanishing in faceted reflections overhead, mocking Twilight and saying there's nothing she can do to stop her — and that Twilight will be forgotten and imprisoned forever. Twilight, undaunted, gives chase and attacks with magic, before breaking through a wall and tumbling into — Cadance?!The truth is revealed: Twilight was right about Cadance being evil — but the truth is it's not actually Cadance. The real Cadance proves her identity by greeting a suspicious Twilight with their Secret Handshake and explaining that the Cadance above is an impostor seeking to take over Canterlot. Twilight and the real Cadance fight the bewitched bridesmaids, then make their way back to the surface of Canterlot. Just before Princess Celestia can complete the ceremony, Twilight and the real Cadance storm in to expose the deception.When the jig is up for the fake Cadance, she reveals herself as Chrysalis, the frightening queen of the Changelings, a race of parasitic beings with the ability to copy the shape of a loved one and then eat the love feelings directed to the fake. Chrysalis has decided to take over Canterlot because as the capital of Equestria, the country with the most love in the world, it can feed her subjects — the other Changelings. She smugly announces that since she took Cadance's place, she turned Shining Armor into her puppet and has weakened him so much that soon he will be unable to keep Canterlot safe inside of his protective force field.Celestia rises to challenge the evil impostor, but after a short (yet intense) struggle, she is beaten by Chrysalis. Among everypony in the room, Queen Chrysalis herself is the most surprised: Having fed on so much of Shining Armor's love for Cadance, she has become even stronger than Celestia!Celestia urges Twilight and the others to get the Elements of Harmony, just when Chrysalis's army finally destroy Shining Armor's force field and attack Canterlot. The Mane Six end up in a pitched battle against Changelings magicked to look like them but in the end, they are overwhelmingly outnumbered and captured before they can get to the Elements.Chrysalis's victory is absolute: Canterlot is invaded by her army, Celestia is imprisoned inside of a cocoon, the bearers of the Elements of Harmony have been neutralized and Shining Armor's power has been completely drained, leaving him incapable to recast his energy barrier. When the Evil Queen stops to gloat, Twilight frees Cadance so she can go to the side of her love. She not only breaks the Changeling's hold on him, but together, their love is strong enough to give Shining Armor the strength to once again perform his protection spell and banish the Changelings, not only from Canterlot but from all of Equestria. The day is saved!The real wedding can finally take place. Twilight's organizational skills pull the whole thing together with dazzling speed, with Cadance enthusiastically participating, and Twilight's position as Best Mare is reinstated and she is allowed back into the wedding. The ceremony is sweet and beautiful, especially for Twilight when Shining warmly tells her that he persuaded Cadance to accept his proposal with the fact that she would gain Twilight as a sister-in-law. As night falls, Princess Luna arrives, and the reception begins in earnest. Everypony dances, and as the couple departs, Shining thanks his sister for everything she has done with a warm reaffirmation of their love. As the carriage leaves, Rarity makes a spectacular dive for the bouquet, and Spike announces his intentions for the bachelor party.Everypony lives Happily Ever After. For about six months anyway.The end.*Cue epic cred......Tori Spelling.*
Tropes present in this episode and/or the preceding episode (YMMV tropes can be found here):
Abandoned Mine: According to Queen Chrysalis, no one in Canterlot remembers the mines underneath them exist
Beam-O-War: Celestia and the main antagonist engage in a brief one of these. Celestia loses.
Beam Spam / More Dakka: Pinkie aims Twilight's horn at the changelings and cranks her tail like a Gatling gun, unleashing a rapid-fire burst of spells.
Beauty Is Never Tarnished: Averted. After a presumably long period of imprisonment in a mine, Real! Cadance is scruffy and battered. Poor girl.
Unkempt Beauty: Real!Cadance still proves to be quite the stunner when she is found, even under all the scruffiness, dirt, and bruises.
Bed Trick: A G-rated version of the trope; Shining Armor has been affectionate with an impostor all this time.
Berserk Button: As soon as Fake!Cadance mentions that her plans involve her brother, Twilight gets pissed! She fires a high-energy blast of magic at her and almost lays waste to the real Cadance a few moments later.
Best Mare: Shining Armor reinstates Twilight Sparkle in this role for the real wedding between him and the real Cadance.
Big Bad: Queen Chrysalis is behind the real Cadence's disapperance and the invasion.
Big Bad Friend: The mane 6 themselves realize too late that it was Queen Chrysalis, who was disguised as Cadence all along.
Big "NO!": In Big Bad tradition, Queen Chrysalis lets one off right before Shining Armor and Princess Cadance's spell hits her and blasts her out of Canterlot.
The preparations of the wedding have to be redone, but this time with the real Cadance who deeply appreciates the Mane Six's efforts with the grace, charm and exuberance you'd expect from a bride worthy of Twilight's brother.
The end credits theme is the same one we got for "The Return of Harmony pt 2".
Vinyl Scratch, Fancypants, Soarin', and Twilight and Shining Armor's parents all make an appearance at the end.
Derpy appears several times in the wedding crowd scenes, with her signature derped eyes (most of the time, anyway). This is most notable when Queen Chrysalis is staring down Cadance in the wedding hall.
The Cutie Mark Crusaders. See the voiceless below.
The Nursery Rhyme dance seen in Twilight's flashback in the first part. When Twilight stumbles upon the real Cadance, she's all set to blast her since Chrysalis has been mocking her through reflections. So Cadance quickly proves she the real one by doing the dance. Something Chyrslias failed to do when she first met Twilight while under her guise.
Cadance and Shining Armor pick up one introduced half a season prior. "Hearth's Warming Eve" showed the bond between ponies could be used to power up an extremely strong spell. Cadance and Shining Armor do a similar technique, except with another bond in place of The Power of Friendship.
Cliffhanger Copout: A commercial break occurs when Twilight and Cadance are blocked by the missing bridesmaids, whose eyes glint menacingly when the screen fades to black. It's quickly revealed upon the return from the break that Twilight and Cadance "defeated" the bridesmaids by distracting them with a bouquet of flowers.
Pinkie's party cannon makes a return during the battle with the Changeling Mooks and is used successfully in an offensive manner. Yes, that's right, Pinkie Pie weaponized partying. Then she weaponized one of her own friends by turning Twilight Sparkle into a gatling gun (see Gatling Good).
Fluttershy prevents herself from being targeted by other Fluttershies by pretending she's a changeling and sending them forward, only to be stopped by several Rainbow Dashes... with one of them in the group revealing she is the real one by bucking off the ones to her side.
Combination Attack: Cadance and Shining Armor's love-powered spell. Shining Armor provides the spell, which she charges since he's not strong enough to recast the shield spell unassisted due to having been drained by Chrysalis.
Conservation of Ninjutsu: Zigzagged Trope. The Mane Six defeat a huge herd of changeling impostors all by themselves, but they can't take on the entire army. Possible Fridge Brilliance: The Changelings are fierce, but Chrysalis claims that she came to Equestria hunting for food for them. They were only weak individually because of malnourishment.
Could Have Avoided This Plot: The villain downright states that had Twilight's friends been a bit more attentive to Twilight's feelings than focusing on a wedding, they would have managed to catch her before the wedding even began.
Critical Research Failure: In-universe: Spike was supposed to host the bachelor party... but did not get that it was supposed to happen before the wedding.
Crocodile Tears: Like in part 1, Cadance cries when Twilight crashes the actual wedding. It fails this time because Twilight brought with her the real Cadance.
Cute Monster Girl: Although the Changelings are nightmarish, the relentlessly cute art still depicts their Queen as sort of cute. To elaborate, she has a beautiful face but her body is terrifying.
Darkest Hour: Queen Chrysalis has defeated Celestia, captured the Mane Cast before they can get the Elements, and her Changelings now run rampant in Canterlot. It takes The Power of Love channeled into a spell to finally defeat her.
Dog Pile of Doom: A dozen changelings looking like Applejack use this move on the real Applejack.
Doppelgänger: A whole race of them with Queen Chrysalis and the Changelings.
Downer Beginning: Leftover from the previous episode's Downer EndingCliffhanger: The Queen imprisons Twilight in a diamond mine, and the rest of the cast are clearly very bitter over Twilight's actions in part 1.
Dramatic Irony: Until Twilight and Cadance burst into the wedding, nopony knows that the bride is a horrible monster, but the viewers know. This makes putting the Cutie Mark Crusader Flower Girls (yay!) in front of "Cadance" as she walks down the aisle particularly horrifying... especially after the episode, telling from what we see in the comics...
Dude, Where's My Respect?: Evidently, regardless the events that took place, Twilight's peers still should have listened to her accusations and/or even given them any consideration earlier on. Of course, given Twilight's track record, you'd think that everypony would take something Twilight's risking her very reputation on as more than a jealous accusation. But then again, while she has been known to overreact, there has been at least one moment where Twilight and her friends sat together and talked about taking somepony's concerns very seriously.
Princess Cadance, all things considered, really had to work to get the happiest day of her life.
Twilight, losing respect from her friends and family, renews her place in their hearts, especially her brother's.
Easily Forgiven: Granted, they were tricked and all, but Twilight holds absolutely no resentment towards everypony for turning their backs on her. It must be the two seasons worth of friendship lessons.
Economy Cast: While the Changelings were overwhelming you'd think the background ponies would have helped out a little bit more.
Et Tu, Mane Six?: Lampshaded by Queen Chrysalis when she points out on how the rest of the Mane Six ignored Twilight in the last episode for being suspicious of Cadance. Granted, they were tricked and all but Twilight made it clear in that she didn't hold it against them.
Everypony Laughs Ending: Because Spike still has no idea what a bachelor party is, like the fact that it's usually held before the wedding.
Evil Gloating: Big mistake on the Changeling Queen's part as it gave the heroes the opportunity they needed to turn the tide. Celestia lampshades how foolish it was for Chrysalis to reveal her true self. Though she's more savvy than most villains, because she waited until it looked like she'd already won before gloating.
Then she gloats about how Twilight's brother, friends and even her mentor coldly ignored her belief that the Cadence Shining Armor was marrying was evil, which turned out to be true.
Evil Plan: Chrysalis plans to take over Canterlot and use it as the feeding ground for her many subjects.
Rarity gets one when Twilight bursts in on the wedding.
Twilight gets one as well when Spike announces his plans for the bachelor party after the wedding.
The Fair Folk: The Changelings, which are the chaotic and fearsome variety.
Fauxshadowing: The Elements of Harmony have been previously used in similar situations, explicitly mentioned in the chapter, and in fact the Mane Six are going for them but they are captured before they can get them.
Fix Fic: There are a handful that try to address the minimal apology Twilight received at the end of this episode, which range from sweet (Post Nuptials) to dark (Faith and Doubt).
Flung Clothing: The Mane Six do this with their bridesmaid's dresses when they go charging out to the Elements of Harmony vault, though Rarity is a little more reluctant. Rainbow Dash does it again at the end when she prepares to pull off a Sonic Rainboom for the reception (she did complain that the dress wasn't aerodynamic back in Part One...)
A blink-and-you'll-miss-it moment, when Queen Chrysalis, still in the form of Cadance, sings "This Day Aria", the camera spins around to point at her shadow on the ceiling. Pay close attention; the lamp on the ceiling overlaps her shadow for a few moments, causing it to more resemble her true form.
From Bad to Worse: Twilight is trapped on some underground caverns where she discovers the real Cadance. Then the impostor is revealed to be Chrysalis, the queen of a demonic race of emotion eaters, who had Twilight's brother under her control all along. Her army of emotion eaters has surrounded Canterlot to feast on everyone there. Then Celestia is defeated. Then Canterlot's magic shield is destroyed and Chrysalis's army invades the helpless city and then Twilight and her friends are defeated and captured before they could use the Elements of Harmony.
Full-Frontal Assault: Interestingly played with. As spoken by Applejack in "The Best Night Ever", ponies 'usually don't wear clothes.' But when Celestia orders the Mane Six to go get the Elements of Harmony, they shed their dresses they wore for the wedding to go retrieve them, and end up fighting a huge wave of Changelings. When you also consider Rarity's hesitation to undress before her friends prompted her to, this pretty much means that, for all intents and purposes, the Mane Six fought the first wave of Changelings in the 'nude'.
Funny Background Event Princess Luna rocking out harder than anypony else during the wedding reception, except perhaps for DJ PON-3.
Gatling Good: Pinkie grabs Twilight and uses her as a gatling gun. However, in an unusual inversion of this trope, Twilight's head does not spin — but Pinkie turns her tail like a crank to fire, just as with the original, manually operated Gatling guns.
Purists will tell you the Gatling is not the only mechanically-cranked machine gun, although it is by far the best known, nor do all of the others have rotating barrels. This is as much a Shout-Out to the original Gatling's mechanism of fire as anything else.
God Save Us from the Queen!: The Changeling queen, naturally. May double as a Hive Queen, seeing how all the other Changelings we see are apparently her children. One of the rare instances when a god does try to save them from the queen, only to fail.
Hammerspace: Where Pinkie Pie appears to pull Vinyl Scratch/DJ Pon-3 from at the end.
Heart Beat-Down: Courtesy of Cadance and Shining Armor; power of love expulsion spell!
Held Gaze: Shining Armor and Princess Cadance after they return to earth and completed their Heart Beat-Down they gaze into each other's eyes passionately.
Hoist By Her Own Petard: The Changeling Queen sending Twilight to the caves, and then taunting her to blast the crystals allowed Twilight to find and free the real Cadance. Furthermore, the queen's plan worked because of the love of Shining Armor and Princess Cadance. Guess what leads to her defeat?
Holding Back the Phlebotinum: When the Changeling invasion moves into full swing, Princess Celestia immediately calls upon the Mane 6 to get the Elements of Harmony to stop them. However, thanks to overwhelming numbers, the heroes are stopped by the Changeling army before they reach the Elements, much less use them.
When Twilight and the real Cadance are escaping the mines. They see a light in the distance and race towards it. They take a mine cart down a track to launch themselves, Cadance spreads her wings to fly them up to the light... only to discover a dead end. Cadance breaks down crying at the sight of this.
The fight between Celestia and the Queen; for a brief moment the Queen is visibly overpowered until she suddenly gets a super charge and knocks the Princess down flat. Even she looks surprised that she could Yank the Dog's Chain.
When the Mane six reach the room with the Elements of Harmony. Except it's destroyed in the next scene, where you see that they couldn't get by the changelings.
Idiot Ball: The Changeling army faces off with the Mane Six... and promptly turns into look-alikes of them, resulting in a Needle in a Stack of Needles situation. While it does cause the heroes some trouble, it's ultimately to their benefit. It helps that the changelings don't seem that bright.
Improvised Weapon: Pinkie Pie uses Twilight as a magic-spewing machine gun during the battle with the Changelings. She also uses the Party Cannon later in the battle.
In Part One, Twilight chastises her friends for not noticing (fake) Cadance's behavior towards them because they were too busy planning the wedding. In Part Two, after the Mane Six are captured, the Changeling Queen points out that Twilight was the only one who noticed the change, because the others were too busy with their wedding plans (leading Applejack to apologize on behalf of herself and everypony else for not believing her).
"This Day Aria" contains several, considering Cadance and Queen Chrysalis are singing the same song but with opposite ideas about the subject. The biggest one is "The kind of day of which I've dreamed about since I was small." Cadance is referring to her wedding, while Chrysalis is referring to her conquest of Canterlot.
The wedding preparations. Fake!Cadance went through them perfunctorily and was nasty about all of them. Real Cadance went through them with grace and joyous enthusiasm.
While we already knew the Mane Six were badass, their fight against the Changelings is easily the best example of them physically combating a threat in unison. This episode also marks the first time we see Celestia fight onscreen. Sadly, both efforts fail.
Shining Armor and Cadance pull off a more successful fail-safe example at the climax.
Lohengrin and Mendelssohn: Lohengrin appears again during Shining Armor and Cadance's wedding, sung by Fluttershy's bird choir.
Meaningful Name: The name of the insect-like changelings is Queen Chrysalis. A chrysalis is what a caterpillar uses to undergo metamorphosis (change) into a butterfly.
Militaries Are Useless : Even with warning of a potential attack and being fully mobilized and ready, the Guards are subdued by the changeling army in about ten minutes. On the other hoof, the Mane Six, without weapons or the Elements of Harmony or any kind of formal training, take down about a hundred changelings practically effortlessly before finally being grossly outnumbered and surrendering.
Mind-Control Eyes: The bridesmaids and Shining Armor have green eyes, glowing in the former's case, when under the control of Chrysalis.
Minecart Madness: In order for Twilight to get from the caves under Canterlot back to the world above.
Mirror Routine: Rainbow Dash does this with the first Changeling to take her appearance. There is a slight lag in the latter's movements.
Never Trust a Trailer: From the heavy promotions for this two-parter, you got the impression that it would be a standard wedding hijinks plot that would end with the typical send-off. This finale also in part serves to promote a wedding-themed toy line starring Princess Cadance. Then the army of Emotion Eaters descends upon Canterlot in the second half. Also, one preview screenshot turned out to be different from the actual episode, with Shining Armor looking happy and not having Mind-Control Eyes.
Nice Hat: The Mane Six's hats — both in the episode(s) and in promotional material (see, for example, the billboard image). Spike wears a top hat that's bigger than his own head.
Nice Job Breaking It, Hero: Chrysalis gloats this way about Twilight's peers who were too caught up in their wedding plans to take Twilight's concerns seriously earlier on.
Nice Job Fixing It, Villain: Queen Chrysalis was set to win if she only hadn't tried to act against Twilight at all. Nobody believed Twilight's accusations, and she was ready to have a Heroic BSOD right there. She was already neutralized as a threat... until Chrysalis tried to make sure she that was, only bringing her and Cadance back into the game.
No Hugging, No Kissing: A notable aversion as not only do Shining Armor and real Cadance get married but they share two kisses on the lips, with the second one lasting a couple of seconds.
The Power of Friendship: It's what got through to an enraged Twilight to realize that the Cadance in the cave wasn't the fake Cadance who'd imprisoned her.
The Power of Love: It's what the changelings feed on. Shining Armor's love for Cadance gives the Queen enough of a power boost to overpower Princess Celestia. It's also what sends the changelings packing in the end.
Shining Armor wears Prince William's uniform, right down to the markings of the Irish Guards regiment on his collar.
The way that the Queen of the Changelings disguises herself as the bride and enthralls Shining Armor is similar to how Ursula disguised herself as Vanessa in The Little Mermaid and enthralls Prince Eric. And her Villain Song even brings to mind the song that Vanessa sings when talking about her own plans.
Queen Chrysalis' transformation into her true form is very reminiscent of Maleficent complete with green flames erupting from the ground. Also, the final part of the transformation when she shows her face resembles a similar part in the transformation of Cure White from Futari wa Pretty Cure.
The montage of the Mane Six beating up all the Changelings is very reminiscent of The Powerpuff Girls, particularly the battle against the Chemical-X-infused monkeys from The Movie. The very last shot of the sequence is a send-up of the "Burly Brawl" scene from The Matrix Reloaded (Neo sending a dogpile of Smith clones flying), complete with a Matrix-style orchestral cue.
Pick a sci-fi or fantasy bug race and the Changelings will probably remind you of them. StarCraft II fans in particular will think of the Zerg's "Changeling" unit, which is also a shapeshifter.
The coach Shining Armor and Cadance leave in after the wedding is very similar to the one in Cinderella that was made from a pumpkin.
A reference to The Shining is made when Twilight and Cadance encounter a brainwashed Lyra Heartstrings, Twinkleshine, and Minuette talking in unison.
In a crowd shot near the end of the episode, a pony-version of Harry Potter can be seen in the upper right corner.
Speaking of Harry Potter, the forcefield around Canterlot, the way it is maintained and (especially) the way it shatters are very reminiscent of the force field set up around Hogwarts in the film version of Harry Potter and the Deathly Hallows.
The way the changelings scamper down the columns in the room where the Elements of Harmony are kept is the same as the way the orcs scamper down the columns and walls in the Mines of Moria in The Lord of the Rings: The Fellowship of the Ring.
The premise bears resemblance to a South Park episode, "The Succubus", especially the scene where Chrysalis reveals her true form during wedding.
It also resembles the ReBoot episode "Null Bot of the Bride". The main difference is that it is the groom who is replaced with a villain in that episode.
Shining Armor and Princess Cadence's scenes before the defeat of Queen Chrysalis are nods to the final battle in Mobile Fighter G Gundam. To prove the point:
Cadence trying to snap Shining Armor out of the spell = Domon trying to free Rain from the Devil/Dark Gundam
Shining and Cadence's attack to repel Chrysalis and the Changelings = Domon and Rain's Sekiha Love Love Tenkyoken attack defeating Devil/Dark Gundam
Skewed Priorities: As the rest of the Mane Six go running off to find the Elements of Harmony so they can repeal the invasion and save the capital, Rarity stays behind to carefully pick up their discarded bridesmaid's dresses. It takes the others shouting her name in unison for her to get herself into gear.
Society-on-Edge Episode: This two-parter involved a wedding plan coinciding with a need for increased security due to a mysterious threat against Canterlot. (Turned out it was connected to the wedding, namely due to the involvement of Chrysalis and the changelings in each.)
Solo Duet: "This Day Aria", as sung by Princess Cadance and her doppelganger, Queen Chrysalis.
Spot the Impostor: Averted since Queen Chrysalis blows her cover the second the the real Cadance appears at the wedding. Quite likely she concluded that since Twilight Sparkle's previous suspicions about the bride now have the real Cadance's support, too much reasonable suspicion as to who is the impostor would focus on her for any further bluffing to deflect.
Played straight during race to get the elements. The changling army change into the Mane 6 and try to separate them to confuse them. The group have to pick out the real versions amongst the brawling.
All of the mane six, but most noticeably Pinkie Pie, and Twilight Sparkle. Pinkie Pie has been shown to be creative with weapons and Twilight Sparkle learned a new spell. She also improved not only in magical prowess but also in physical prowess as well.
When Rainbow Dash first used the Sonic Rainboom, she could only do it heading downwards, at incredibly high speeds, and was being fueled by her desire to save a friend. Now she can do it heading upwards, and practically from a standing start. In addition she avoids her usual Leeroy Jenkins role by acting as The Combat Pragmatist in battle to save Fluttershy.
Rarity — with no objects to throw, her magic was unsuitable for combat, she had no special tricks like Pinky nor was she a sportsmare like Dash and Applejack. Yet she got through the entire fight scene by beating changelings with Good Old Hooficuffs.
To Serve Ponies: The changelings planned on using the population of Equestria as a food source after they take over.
Trailers Always Spoil: When this episode was put up on iTunes and Netflix, it was given the synopsis "Twilight saves her brother and all of ponykind by freeing the real Mi Amore and defeating Queen Chrysalis, a changeling that had assumed Mi Amore's appearance in an attempt to take over Equestria."
Underestimating Badassery: Celestia underestimates Chrysalis, but Chrysalis underestimated herself there too. Chrysalis also underestimated Twilight and Princess Cadance, as she's clearly startled they managed to get past her three mind controlled bridesmaids and escape the mines.
The Vamp: Queen Chrysalis, lampshaded in "This Day Aria."
Vile Villain, Saccharine Show: Cadance or rather the Changeling Queen, Chrysalis is a treacherous and true love defying witch in a show about friendship.
Villain-Beating Artifact: The Elements of Harmony in a defied example this time. The mane six don't manage to get to them due to the changelings stopping them.
Villain Has a Point: After Twilight Sparkle was harshly chewed out for being suspicious of Cadance in the last episode, it's nice to hear Queen Chrysalis gloat to Twilight's friends for not believing her and letting the Queen's plans carry out with no problem.
Villain Song: "This Day Aria," with the initial song as a villain/hero duet. Notably the first song in the show from an actually evil villain (as opposed to the just mean Flim Flam brothers). In accordance with the trope, it's awesome.
Violence is the Only Option: For the second time in the series the whole mane six are forced to fight. They do surprisingly well but are overwhelmed by sheer numbers in the end.
The Voiceless: Once again, Fluttershy appears prominently but is absolutely quiet — well, moreso than usual. Once again, Pinkie Pie does receive a speaking role, however minor. It's especially odd since both received lines in the first half of the episode. The Cutie Mark Crusaders also have no voice.
Walking Spoiler: For the purpose of this page: The Changelings and their queen, Chrysalis, due to them secretly being the villains of the two-parter, and Chrysalis being the impostor Cadance from part 1.
Welcome Back, Traitor: Goes both ways. Twilight herself didn't held a grudge against her brother, friends and mentor for turning their backs on her. They themselves in return welcome her back as their friend without a problem.
What the Hay, Hero?: Chrysalis gives a smug villainous variation to Twilight's friends, by ignoring (and practically disowning) Twilight they allowed Chrysalis's Evil Plan to go forward without any problems. Applejack at the very least is remorseful over this, on behalf of herself and everypony else who feels the same way.
Chrysalis was only able to defeat Celestia due to the extremely large amount of love she had absorbed.
The Mane Six were easily defeating the Changelings in single combat but were overwhelmed by sheer numbers.
Your Costume Needs Work: Pinkie Pie is all excited at the idea of seeing one of the changelings turn into her, only to be disappointed with the result, despite the mirror-perfect imitation.
Pinkie Pie: Meh, I've seen better.
Zerg Rush: The Changelings' primary advantage against the Mane Six. The girls, even Fluttershy, fight admirably to get to the Elements of Harmony but are delayed long enough for more Changelings to surround them and get inside the building where the Elements are kept. Faced with overwhelming numbers, the Six have no choice but to surrender.