Meanwhile, my pony self has become Prince Buttercream, monarch of all tasty pastries, with Pinkie Pie as his beloved princess.

Also, I see Screwball. :D

But what about Nightmare Moon?

@donut64s  
You realize he’d just make it worse, right?

@Kamazeustra  
well she got to kick some flank in the sombra war

@DashingJack  
I spoiled myself on this gif but I thought the same thing when I seen Discord

@donut64s  
… that to ensure to be free to mess equestria, he should have prevented Twilight to restore her timeline.

Frankly I would have just talked to Discord, he could figure it out

You know what this calls for?  
A sexy party.  

“Swiggity swooty, I’m coming for that booty.”

C’mon Twily, there’s no time for you to clown around!

My life is complete. no regrets

@Lyra_Heartstrings  
Probably Celestia did that on her own.

dat discocane

@Rarewarefan  
Impossible. The timeline change is Rainbow Dash not doing the Sonic Rainboom. So Luna was still trapped in the moon as Nightmare Moon.
 
Most likely either.  
-Celestia manages to beat NMM by herself in this timeline and both get dunked by Discord when he breaks out of his stone prison.  
-NMM beats Celestia and we get the NMM rules timeline until Discord breaks out. Discord then dunks NMM so hard she goes back to being Luna and unseals Celestia so they can both be his personal clowns.

@IceKitsune  
unlikely. if there WAS an alternate, they would simply do the same job.

@Lyra_Heartstrings  
Current fan-theory is that Discord changed her back to Luna.

@Rarewarefan  
Can’t be, as Twilight said the spell always sends them back to the exact time they left.

“We’ve done nothing productive all day.”

@Lyra_Heartstrings  
The real reason is because these timelines are arbitrary and just to show off the main villains.
 
In universe I’m guessing alternate mane 6 reformed her but lost to Discord.

@Lyra_Heartstrings  
Chances are this was before she turned into Nightmare Moon.

That’s Luna.
 
Not Nightmare Moon.
 
Luna.
 
How did she get reformed without the Mane Six?

Celestia spent the entire episode getting dunked on.