You mean on the diamond dogs issue? We eliminated a nest of the foul creatures that had been causing no end of trouble for the citizens of Ponyville. Celestia was just going to sit there and to try and plead with them through diplomatic channels, but We were willing to take immediate and decisive action against the enemies of Equestria. Those who support Us support a queen that will not degrade ponydom by begging or humiliating themselves before lesser species.

*The diamondoid lenses covering the main sensors begin to burn, blinding the reanimated. Automatic safety mechanisms kick in, and it stops firing.*

*Ashamed.* We did. We try not to, but the wine was just so delicious…

Well, there are numerous benefits, but the ones most visible to a laypony are:

1. Our increased willingness to implement technological improvement will lead to shorter work weeks and more goods for everypony.
2. Our far superiour police and security measures has entirely eliminated crime within Our domain, and will do so for all Equestria once We are queen.
3. Once We are queen, We intend to fund massive architectural renovations of all the major cities in Equestria, transforming them from the mundane and old fashioned places of today into places epitomising the glory and beauty of ponydom.
4. We will defend Equestria relentlessly from all foes, both within and without. Our actions against the diamond dogs should speak for Us in this.

An Arcel clone approachs nightmare and bows, “Mam… we recently found something when sifting through the files that… that the Dark Descent had when he was working behind your back… We thought you might like to see it,” magicaly lifts out a document and TK’s it over to her, a voice clear as day can be heard in her head while reading it, its his:

My ascension is at hand! My hour of glory! I and I alone will be Nightmare’s chosen! Her favorite acolyte and prime among her champions! From this town, I will conquer the next! And the one after that! I will crush entire nations under my hooves! I will stride down the halls of the Harlot Celestia and I will grind her and the golden throne of canterlot between my iron jaws! The universe will know the will of Nightmare! TREMBLE! QUAKE! THESE ARE YOUR FINAL HOURS! HER REIGN WILL TURN THE HEAVENS THEMSELVES BLACK! THE NIGHT WILL LAST FOREVER!!
-Dark Descent, Speech upon declaring war

The Clone sat there in front of her, head down, Arcel being to honest of a pony to hide this from her.

====

Nightmare Moon looks saddened but not entirely shocked by these revelations.

“We anticipated that his feelings were along these lines, and if it wasn’t for the fact that he was hurting Arcel We would have liked to keep him around. We do not regret Our choice, only that it had to be made in the first place.”

She walks off, trying to hide from the clone the fact that she’s crying quietly.

We are very new to independent goddesshood, and We aren’t sure what Our sphere is, or even if We have one. To mortal ponies We symbolise their fear of the dark, so perhaps it is something along those lines.

As for your second question, We can, if We choose to, perceive the world in terms of cause-effects and interaction equations. Both Doctor Whooves and Doctor Manehattan give Us terrible headaches if We look at them in this manner.

*The reanimated continues firing despite being entirely unable to move. The menacing fanged mouth mounted on the front is just for show, and the machine presents an entirely armoured target on its ‘face’.*

Hmm… We suppose you are very beautiful, for a human. Humans are just too…. humany for Us.

We are immortal, or as close to it as any being We’ve ever encountered. We regenerate nearly instantly any mundane injury, We do not age, We do not become ill or poisoned. There are ways in which We can be destroyed, but nothing that is accessible to an ordinary pony can do Us permanent harm.

Good. So you won’t light anything on fire the next time We have a party?