YEEEEEEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHHHHHHHHHHHHH!!!!!!!!!

@Background Pony #4FEF  
On the first point, I concede. Upon watching relevant scenes in question, you’re right about her not using the royal “we”.
 
On the second point, um, that’s sort of what I was saying about Nightmare speaking in what was “commoner” for her time. The only thing I don’t get is, (my understanding of what you said is that archaic commoner = royal because Celestia wanted to cut class castes, correct me if I’m wrong) how did modern come about? If that’s what you are saying, I think my differing of royal versus archaic commoner = modern with Nightmare purposely speaking in “commoner” makes more sense because of the explanation I gave.

@Nightshade142  
At what point does Nightmare Moon use the royal “we”?
 
An easy interpretation: what to us is “archaic” language versus “modern” language, to them is “royal” language versus “common” language.  
Being royal, in their case, would also be archaic, because Celestia wanted to shrink the class distinction, but both modes of speech would be familiar to someone from a thousand years past.

@Background Pony #4FEF  
My personal headcanon about how Nightmare talked is sorta like this:  

@Perteks  
A sample of old English (Beowulf, source): Hwæt! We Gardena in geardagum, þeodcyninga, þrym gefrunon, hu ða æþelingas ellen fremedon. Oft Scyld Scefing sceaþena þreatum
 
The Royal Canterlot Voice alludes to early modern English.

I’m not the only one who thinks that the fangs look goofy, right?

Beware the moon
 

@Prof.NightJack  
Maybe, but they could throw some archaics it would be much cooler don’t you think ;p

@Perteks  
She never really archaic, it was more shakespearean.

@Prof.NightJack  
Erm but she talked like that, she used we and rest of archaics.

@Perteks  
Shew didn’t talk like that in Friendship is Magic 1&2, so what’s your point?

@Background Pony #629A  
But royal canterlot voice is just loud, I talk about archaic words

@Perteks  
Hold it. Luna clearly says in Luna eclipse that the Royal canterlot voice was used when addressing subjects.

That was cool but lack of old english and non S1 NMM voice was just plain bad thing

why no one has done a gif of discord crying twilight photo?

Apparently there was a dentist on the moon if she lost the fangs when she came back.