There is no such being as 'Multi-Eternity'
'Multi-Eternity' is the nickname Captain Universe gave Eternity's totality or All of Eternity.
There is one Eternity consciousness simultaneously shared
by the the infinite amount of aspects that make up his totality.
(proven on panel)
Originally posted by Merlyn -Eternity-
"To reclaim that which is mine and myself -- Control over THIS realitY"
-Uatu-
"Thanos has now thoroughly usurped Eternity's rightful position as the center of all reality in THIS sphere"
"...A valiant effort to save THIS plane of existence has failed":
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If only ONE reality/universe is mentioned several times, why assume an infinite amount of realities/universes is what was really intended to be used?
This misunderstanding has been addressed before.
Eternity 616 is one Reality,
that contains the power of basicaly all creation across the infinite prime Multiverse,
and the majority of all power in Marvel revolves around the Multiverse housing 616.
So yea, "This reality ... This sphere ... This plane"
is referring to 616 Eternity/Infinity,
the entity that "holds entire Universes past, present & future in one hand"
the entity where the "death and rebirth of ALL UniverseS" takes place
withIN his core,
a core located withIN the 616 reality. (or 616 Eternity/Infinity)
(proven on panel)
Bottomline:
Due to these undebatable facts ..
Thanos/IG defeated the full scale power of the infinite prime Multiverse,
and he did so in one move.
Not to mention an incomplete IG made the mighty UN its b*tch.
👆
You don't have to affect the Multiverse,
to prove your "Multiversal"
if you can curbstomp an entity that embodies all power withIN said Multiverse. ✅
... *imo, the IG is all powerful across all creation, (omniverse)
only beneath powers either surpassing or rivaling the LT.