I apologize if it seems like I'm spamming, but I haven't participated in this discussion for days. I also believe the information they provided is incorrect.
While I understand why many of you think this represents the Griever's Universal form, I see most references in the series as relating to her Omniversal form.
1.)Scarlet Witch is the Ultimate Nexus, a being capable of touching or destroying all realities and possibilities. She can prevent
the heat death of all creation(the Griever), as stated by the Never Queen. This statement clearly refers to the Griever in her Omniversal state, and it comes from the Never Queen, not the Griever herself.
2.) The Grand Design is also threatened by the Nexi
across universes, this
concept tie to all creation,
it's the concept how all things begin and end. Wanda threatens this idea; she has
altered the set path of the end of the cosmos and everything within it. This angers the Griever, and I don't believe she would send her M-body to stop someone who can influence all possibilities and realities and threaten the Grand Design, even the
Darkhold also threaten to the set path, sending her M-body won't do anything against a being like the Living Darkhold/Ultimate Nexus.
Scarlet Witch's powers are clearly above the abstracts M-body; her raw power far exceeds what she has previously displayed, even
surpassing her peak state and House of M.
3.)She was able to cross to a
higher plane of existence without causing harm, which is remarkable since even the Herald of Life was
injured when traveling from the
Superflow back to
normal space, where crossing such planes typically results in
death.
4.)She is the
embodies of
Primordial Chaos, the same chaos
the same chaos embodied by the Chaos King, the same chaos that exists before Multi-Eternity, and the same chaos that expands the Big Bang Heroic Age: Villains #1
5.)As Roirr stated, Omniversal entities could harm normal space by unleashing their powers, but Wanda's Chaos magic threatens the grand design..the concepts that encompass all beginnings and ends to all that is. This may also explain why the Griever couldn't damage normal space.