I know that this is from a video game based off of the tags, but my brain shut down reading all of this…

Suddenly, Sunset was magically knocked aside by Celestia and the real Luna showed up alongside her
 
Twilight: Wait? What is going on now? CAN MY MIND STOP MAKING ME EVEN MORE INSANE!?
 
Celestia: It’s okay, Twilight, you haven’t gone insane!
 
Twilight: Um…excuse me?
 
Twilight’s friends show up behind them
 
Applejack: We’ve all been tricked the whole time!
 
Rainbow Dash: Sunset’s been manipulating you via a spell ever since you went insane that one time!
 
Rarity: It’s true, she’s been in this realm for a while, waiting for the right opportunity to take your element from you! She, along with her Changeling co-horts created this whole event in order to make you lose your will and discredit you in the eyes of the princesses!
 
Twilight: But then…what about-
 
Shining: Us, sis?”
 
Cadance shows up next to him
 
Twilight: SHINING! Runs up to them and hugs I thought I was going insane…
 
Cadance: It’s okay, Twilight, we’re here for you.
 
Shining: We’ll never let this happen again, Twily…I swear it…
 
Sunset: Now over where Changeling Cadance and Shining are Well well…hate to be a bummer on your parade but this ends now…Chrysalis! Deal with these rabble!
 
The Changelings drop their disguises
 
Chrysalis: Gladly…
 
(There we go, problem sorted :P)

after reading this comic, i suddenly had the urge to fire white phosphorus rounds at sunset and changelings.

This makes a terrifyingly large amount of sense…

Post Traumatic-based Psychosis also affects Pokèmon trainers. ;D

Fuck the what?

Oh my god… My mind is blown. This is like Inception all over again…

Eeyup, my mind is thoroughly screwed.

@Revan0123  
Still waiting for a “White chamber” reference.

Then she wakes up back in the cave where Celestia & the others find her. Turns out that she was trapped down here for a few days after a little mining incident with no apparent way out. She went a little bonkers and made this whole scenario up to ‘try’ calming herself down.
 
As they walk back up to the surface, Twilight could see them:  
 
The numbers…
 
And as Twilight charged up a disintegration spell, she could hear a voice in her head:
 
“Celestia, Luna, Cadance. All…must…DIE!”
 
(Yep, I’ve turned a mindfuck into another mindfuck :P)

@Lem  
I’m certain the source says that. :\

This is bloody plot of Spec Ops: The Line.

FISSION MAILED!

@ExOttoyuhr  
Watch it. Reviewers say it’s messed up in some way, but I’ve forgotten how. Although, I don’t seem to recall it being called shit outright. :3

Spec Ops: The Line references in the comments? I don’t know why, but it certainly feels thematic. Is Sunset Shimmer collaborating with the changelings? (I’m horrified to realize that I can’t quite put it past her.) Or is this comic’s art drawn by an unreliable narrator?
 
… Wait, the Spec Ops: The Line references are because this is from that game, aren’t they? I need to play it.

@thps48  
Heh, yeah…wait, I’m confused, which one are we talking about? I liked BI; didn’t like SOtL.

@Lawful Girly  
Yeah, you sort of agree with me. Admitedly, I’ve never watched it, but when Yahtzee gushes about a game I tend to think it worth taking a look… I never do, but whatever. :3

@thps48  
bad*

@d715  
Dumb =! excruciatingly sad… <.<;

@Dreamsicle  
not dumb enough

Almost reminds me of Bioshock Infinite.