I'm not sure if I know of anyone who would be willing to make something that big. I would love to try, but I don't know if my lack of gallery-filled-ness or watchers/popularity might make one more hesitant to commission me for something like that. My crafts account is  thatcraftyjellyfish

Would it need to be able to stand up on its own?

Well looking at your skills they look fine but like I said it will need to be about 6 to 7 foot tall and hopefully stand on its own if possible. I know it's a big order but that's what my friends really wanting to do plus he will also give Credit to the maker.

Yeah, I know you said that. I won't lie and say I have much experience with plushies that large (although, I am almost done with a lifesize minecraft zombie for my brother).
I am confident, however, that I could make a slightly simplified version of Discord of that size. I couldn't guarantee that it would stand on its own, but I have some ideas as to how I could try to make that work.
I understand that I am probably no one's first choice to commission, as someone who has yet to get their name out. But if you can't find anyone who's available/affordable, and are willing to give me a chance, let me know. :)