Dear Princess Celestia

Dear Princess Celestia

It's only been a day since my last letter and I've got some less than pleasant news to share about the recent aggressive sickness that I've noticed around Ponyville, I think the ponies here are...Changing somehow
I mean they've begun loosing fur like I mentioned in my previous letter, but I mean they've begun to literally start shifting states in their own physical bodies, for example?
I've needed to keep Spike in the basement to try and calm him down, but I could see the green spines on his head shifting their shape and turning sharper, it was similar to when he was entering his 'Dragon Greed' state awhile ago.

I've been trying to examine the cause but I have been unsuccessful at the current moment, I've even tried sending some of my research to Fluttershy since she has a much broader understanding on the knowledge of animals but I haven't gotten a response yet.
I'm hoping she's just busy with her animals, because I've been unable to find her in the cottage even after taking a quick flight over the area to see if I could find her, I experienced the same with Rarity and Rainbow Dash, but I was able to find Pinkie Pie and Applejack in their respective houses,
Unfortunately, Applejack informed me that Big Mac has disappeared after some of the 'infected' townsfolk, as she has chosen to call them, arrived in Sweet Apple Acres to try and pull them out to some kind of celebration, Big Mac apparently went completely alone after lying about his family not being home and hasn't been seen since

Listen, I know this is incredibly bizarre for me to bring up, and it is possibly something I can handle myself but I need to ask for your help, I need you to send some royal guard down to Ponyville to try and help me handle this situation, I fear this might be far more dangerous than many of the other bizarre occurrences that have transpired within Equestria in recent years.

-Your friend
Princess Twilight Sparkle