@Meanlucario  
Who’s going to be “Father” (Dwarf In The Flask)

@Philosopher Stone  
I mean to reference Full Metal. At least we don’t need to sacrifice the Crystal Empire to create you now.

@Meanlucario  
Waiting for this day? I dont want to see this again.  

@Philosopher Stone  
Yes  

@Philosopher Stone  
You were waiting for this day, weren’t you.

They are back!

I wonder if they will see the Truth after this.

I’m pretty sure someone lost an arm and leg, along with their little brother trying to do this…

@Meanlucario  
THIS GUY GETS IT

Celestia in the back just not giving fuck it seems XD

Masshiro na keshiki ni ima sasowarete  
boku wa yuku yo mada minu sekai e

“We should need that much for equivalent exchange to bring back the Princess’ old tumblr.” (You know the one she’s talking about.)

I hope this episode doesn’t get banned.

@LeoNero  
You and everyone else.

@MadVillan  
Yeah he’s quite well camouflaged by Celestia’s hair, almost impossible to see in the gif due to compression.
 
I don’t think this is a flashback. Maybe a vision of the future, or they are watching the present unfold from a distance. Or perhaps it is a vision of a hypothetical reality and not what is fated to happen. Maybe Celestia is sharing her supposed future-vision power with Twilight and Spike? It could be several things.

I’m getting a strong Fullmetal Alchemist feel from this.

@dynamicv  
Looking really closely I can make out his feet standing next to Twilight and Celestia but he seems to disappear right after that and I can’t see him at all in the next shot. Though if he is there it’s weird he’s looking in on a flashback he should be in.
 
Edit: NVM found him. It’s much easier to spot him in the original video.

@MadVillan  
Maybe Starlight and Sunburst disappear, and they’re using the Flashback Potion to see what happened to them.

@dynamicv  
Let’s just go back to the start then and keep it simple by not including things outside of what is asked.  
How do we know this is a Celestia episode?  
And actual one, not just one where she plays a part.

@MadVillan  
Spike is actually there, it’s just hard to see him against Celestia’s mane when they are both translucent. We see his feet along with Celestia and Twilight’s hooves in one shot.

I’m not so sure this is supposed to be a flashback. Spike isn’t there like he was when they actually first met again.

@Prof.NightJack  
That was my first response to you. Like I just said, my second response was to this post of yours:
 
@Prof.NightJack  

 
You asked me how I knew this clip was from the episode with “Celestial” in the title and I replied to that question.
 
@Prof.NightJack  

 
I literally just said that? You are calling me wrong while agreeing with me?
 
@Prof.NightJack  

 
Oh make up your mind!

“This will end in tears and/or the end of the world as we know it”. :)

@dynamicv  
You responded to my saying how we don’t know if it’s really a Celestia episode.  
So you are wrong, whether or not it’s a true Celestia episode is not a separate issue, it’s the main one.  
What is a separate issue is what episode this is from.