A Very Shadow'y an Rubber'y Halloween'

I decided for Halloween to order from a costume site a but upon opening my laptop a odd pop-up sprung up "Unleash your inner Halloween spirit here!" I was iffy but it opened despite me not doing so, oddly nothing showed up that was until things got creepy..
"We will find a costume that best matches you Rebecca..." I was a bit startled how did this site know me? I had never used it before nor did I have any info set up, the screen flashed a Jack' o lantern.

The website said -HauntedCostumesEmp.net-
Once that stopped only one option appeared and it had no pictures no info aside from a description of "Your perfect Costume Match" what was this some dating site in disguise? I was a bit annoyed and tried to refresh the page to find something else I wasn't about to order a unknown product but it then got stranger "-Costume Delivered-" the site then flashed black and closed out. Despite trying to search for it it didn't pop up in any searches.

"How does it not exist?" I was confused but things only got stranger when I got up and went outside to water a potted plant and noticed a Red box on the porch no letter or anything but I finished watering the plant and brought it inside it was rathe heavy for a Red Box that small "Why is it so heavy did that weird ass site send me a box of Bricks?!" the box slipped out of my hands landing on floor near my feet and a tornado of Slime/Latex goo shot out.

"!!" I was caught off guard and it started to attach to me at a rather fast pace Engulfing me whole in a matter on mins, "MUMMMPGHFHHH!" the Goo started to take a form and soon had sealed me away forever, "Let me out!" was heard but muffled underneath but my words were changed by the rubber suit to act and sound like Umbra "Are my subjects Ready to see my greatness?" as if on queue another voice spoke who was in the other room "Yes, your majesty." my boobs bounced my ass jiggled and my mane and tail swayed with eeriness of there own as if they were alive.

I licked my fangs "This will be a fun Nightmare night month!" My horn started to glow black with purple orbs in the energy and I turned my house into a Shadow Crystal paradise snuffing out any light around me and my home. "THE SHADOW MARES BACK HAHAHAHAHAA~"

yes I know it's not Halloween but i'm uploading early due to most likely will be unavailable then due RL obligations so hope you guys enjoy!

This com is a Halloween Com made by ATCpony2 thank you so much ATC!

Umbra's original 1st appearance was made by SkyspearDraw and can be found here >>3661745

This Umbra is owned by me she is from my AU and is my oc!

Q. is this the same Umbra from the 1st series?
A. Yes and no it's a Alt Universe.

Q. Is the Umbra suit alive or is it you controlling it
A. it filters what I say/how I act if anything the suits alive and makes me say/do things.

Q. Can you remove it?
A. No it just stretches when attempts to remove are made.

Q. What are her Fangs for is she a Vampire?
A. intimidation and she does bite or threaten but she also could be considered similar to a Vampire she would drink wine, and eats the energy of crystals... which can be part of a pony's/creatures life force in some cases, Reducing them to a husk and a mindless drone that obeys her will.