What is this "Imperium of Equus" like?
Effectively it is the Imperium of Man, inhabited solely by ponies. We know little about it save that they appear to revere a so-called ‘God-Emperor of Ponykind’ (We have to chuckle a little at this point), and that their weapons are as effective as their human Imperium equivalents.
As to whether their universe is similar in other respects to the one that houses the Imperium of Man, We cannot answer, save to comment that since they have an equivalent to the Ordo Malleus, it seems likely Chaos exists there as well.
The CCU takes a few steps back* ?: Very well. Sick 'em *Just the an army of machines appears out of seemingly nowhere. They ranged from a variety of hovertanks to Large multi-legged machines, and from small interceptor to large Arial platforms. All of them bristled with unknown technology and a light sheild around them. The CCU Fires the first shot, a 200mm railgun, at a Standby Golem*
*The railgun volley impacts Nightmare Moon’s shield and dissolves. The shield then drops, allowing her forces to move forward and engage the invaders.
The titan’s primary volcano cannon locks onto the CCU and prepares to fire.*
Nightmare, Araima is about to attack again. Do you need some help?
If you could stand by and make sure Our portal network remains fully functional, that would be very helpful.
RC: W3LL, 3XCUUU53 M3, PR1NC355! 60 L34RN H0W 70 R34D 7H3N. 1 0NLY S41D Y0U W3R3 8357 P364C0RN. }:[
We are fully capable of reading your words. They simply hurt Our eyes, that’s all.
Thank you for the sentiment, however.
asklemondrop asked you: ▲
((ooc: EquestriaMUSH will be down for maintenance for a while. It shouldn’t take more than a half hour or so.))
Pony Joker + Pony Harley Quinn
discord-answers:

(ooc: Oh yes! xD Someone should make ask blogs for these characters! xD I mean, there aren’t any are there? If there are, then I shall follow them!!)
((ooc: I could probably manage playing Pony Harley, if somepony wants to play Pony Joker (or maybe Pony Ivy, Harley’s boring on her own).))
*approaches, Alicorn mode, but colors muted and Cutie Mark's color warped a bit* Nightmare my dear, *smiling wide* I have news.
Okay I just discovered something unsettling, if you kill Celestia the sun will go super nova and explode, taking out the very planet Equestria is on and not even your magic would be able to stop it. Why you ask? Because it seems her life has become tied to it over the years and if she goes, so does the sun. Also if you destroy the elements of harmony then there will be nomore harmony in the land, only chaos and discord and that's no fun. Sorry, so what will you do now now Miss Night? ~ Mr.B

Anonymous
We are certain enough that you are lying that We are willing to continue Our plans without change.
At most Celestia’s death may cause a slowdown in the sun’s fusion, but even that is unlikely, and if it did occur We would have close to a decade to evacuate Equestria.
xavar-thechaoslord asked you: ▲
xavar-thechaoslord:
Interesting. (OOC: What exactly does it mean? I’m not quite sure.)
((ooc: She had a couple of bad run-ins with cosmic horrors in previous RPs, and has sworn off her previous close ties to the Chaos Gods as a result.))