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In the MCU, Scarlet Witch doesn't get to tap into her full powers — a smart decision to make on a storytelling level, since she'd win almost every fight easily. Although she rarely battles the Marvel Cosmic entities, Scarlet Witch's magic has been known to alter events on an infinite scale. For instance, one of her hexes wipes out mutant powers in the entire multiverse.
Wanda Maximoff's magic is so powerful that she can feasibly stand toe-to-toe with some of Marvel's Cosmic beings. These characters are literal gods, but Scarlet Witch's magic puts her roughly on their level. She can easily hold her own against the best of them, although there are a few she's better off not fighting at all.
Updated August 6, 2022 by Declan Lowthian: Since she featured prominently in both Wandavision and Doctor Strange: Into the Multiverse of Madness, it's high time to re-evaluate Scarlet Witch's power level. We've revamped this list to categorize and rank the many foes Wanda Maximoff could and could not defeat.
Cosmic Beings More Powerful Than Scarlet Witch
Oblivion Is As Old As The Universe
Oblivion is a first-born child of the universe, along with its siblings: Death, Eternity and Infinity. It embodies, to put it plainly, all the nothingness there is. It cannot be defeated, is the reflection of Death, and prefers to live inside a separate universe called the Outer Void.
Although Scarlet Witch's magic can alter entire timelines, it can only affect something that actually exists. To Oblivion, everything might well be an illusion, because everything that exists ultimately returns to it, so it can be reborn.
Death Is Inevitable
Like her sibling Oblivion, Death is a fundamental force as old as the Marvel universe itself. Death exists because life exists: every living being meets her at one point or another. Not even Scarlet Witch is immune to her alluring call.
Until there is nothing left alive, Death cannot be removed from power. Due to her ability to alter any form of energy, including magic, she has been called a "Multiverse-level threat." However, Scarlet Witch has nothing to fear from Death, as long as she doesn't initiate the fight.
The Fulcrum Is An Omnipotent God
The Fulcrum is a being so powerful that it counts the Celestials, the Horde, and even the Watchers among its subordinates. The Fulcrum is one of several Cosmic Marvel characters who really don't work by the same rules as the others.
Rather than being a force of good or evil in the Marvel universe, The Fulcrum is an omnipotent and omniscient meta character, right up there with Marvel's most powerful god The One Above All. Some fans even speculate he might be a manifestation of Jack Kirby himself.
The Phoenix Force Is An Undying Phenomenon
Scarlet Witch has, in the past, managed to banish the Dark Phoenix in the form of Cyclops, with the help of Hope Summers. However, the actual Phoenix Force is much more powerful than the Dark Phoenix that often possesses people.
Scarlet Witch's Chaos Magic is a joke in front of the Phoenix Force, given that the latter could effortlessly absorb it, reshape it and send it back to Wanda. The Phoenix Force exists outside of mortal understanding, as it is limited to a single plane of space-time. It is everywhere, all the time, and by its very definition, it cannot die.
The One-Above-All Is The Marvel Universe's Ulitmate Cosmic Being
The One-Above-All is Marvel's tribute to Stan Lee, like The Fulcrum is allegedly meant to be Jack Kirby. As one of the creators of the comic book universe inside which all the Marvel characters live, The One Above All has every ability one can imagine and zero weaknesses.
Scarlet Witch is the nexus being of Reality-616, meaning that her very presence holds the structural fabric of the universe in place. But The One-Above-All can simply rewrite her story any way it wants and even erase her character from Marvel's pages entirely.
Cosmic Beings Less Powerful Than Scarlet Witch
Thanos Stands No Chance Without The Infinity Gauntlet
In Avengers: Infinity War, Scarlet Witch was able to keep an Infinity Gauntlet-wielding Thanos away from her long enough to destroy one of the Infinity Stones. In the sequel, she shattered his double-edged sword (which could break Captain America's vibranium shield) without even trying.
Without the Infinity Gauntlet, Thanos would be vaporized by Scarlet Witch almost instantly. In fact, one might argue that even with the power of the six Infinity Stones, he would find her a difficult opponent — as magic is not within the realms controlled by each stone.
The Watcher Has No Power To Affect Other Realities
Many superheroes consider Uatu The Watcher to be one of the most powerful beings in the galaxy. In fact, it is claimed that his clan could perish at their own chosen time, and if they feel like it, return to life simply by wishing it. Uatu's steel-trap of a brain can even resist telepathic attacks from the likes of Galactus.
Unfortunately for Uatu, Wanda creates different universes in her sleep, sometimes literally. All she needs to do is wish Uatu out of existence, and nothing can bring him back.
Ego, The Living Planet Lacks The Mystical Might To Stand In Wanda's Way
Ego is a self-sustaining planetary life-form that can produce bursts of strange psionic energy that are said to match that of Galactus at full strength. Ego doesn't even need to store fuel for the processes occurring within its body. It just consumes billions of life-forms or siphons out an entire sun if required.
As powerful as Ego is, however, it is still just a planet. A single blast from Wanda's hex bolts can simultaneously negate Ego's psionic powers while ripping its entire body apart at the molecular level.
Franklin Richards Would Need To Grow Up First
The son of Reed Richards and Susan Storm, Franklin Richards is quite possibly the most powerful Omega-level mutant to exist. Even Galactus claims that he is the most powerful mutant ever born, a statement that seems quite apt considering the kid can generate little baby universes under a blanket in his bedroom.
There is no question that when Franklin grows up, he will be far more powerful than Scarlet Witch. As it stands, his child-level abilities cannot quite compare with her reality-destroying skillset.
Proteus Owes His Existence To Scarlet Witch
Proteus can warp reality, as most of Marvel's Cosmic beings can, but his powers are limited. However, his actions, such as transforming a car into insect, or a tower into a liquid, seem like magic to most mortals. He can transport himself across dimensions with just a thought, and at the same time end fights by just taking control of his opponents' minds.
However, Wanda is so powerful that she is the reason Proteus exists in the first place, as she accidentally created him when forming the House of M. A battle between these two characters is moot: the victor will forever be Scarlet Witch.