SPOILERS for WandaVision through Episode 7, because I want to get some wild-ass theorizing out there before all is revealed.
In the Marvel Cinematic Universe, movies like Thor and Doctor Strange established magic as a technology born of a more advanced science, a means of tapping into primordial cosmic forces. The Infinity Stones, created along with the universe by the Big Bang, are powerful sources of these energies. But possessing an Infinity Stone is not the only way to access a portion of its power. Wanda and Pietro Maximoff were given powers by Baron Strucker, experimenting with the Mind Stone. Carol Danvers got her powers from an explosion of an engine powered by the Space Stone. Some mortals in the MCU seem less accidental about tapping into these forces.
Have you ever noticed that the stories of the Marvel heroines, from Jessica Jones, to Captain Marvel, to Wanda Maximoff, are about overcoming gaslighting? I wonder if Black Widow’s solo story will follow suit, with the other assassins of the Red Room. Anyway…
WandaVision episode 7 absolved our heroine of wrongdoing with the catchiest earworm of revelations: it’s been “Agatha All Along.” While this was presented as a big reveal, was it really? There was a certain joy in the confirmation–sold entirely by Kathryn Hahn’s gleefully wicked performance. But even casual readers of Scarlet Witch comics knew that Agatha Harkness was the likely identity of “Aunty Agnes.” In the comics, Agatha was more ally and mentor than adversary, and the only time she really went against Wanda was when she removed Wanda’s memory of her “children”–who weren’t really her children at all. Ooh, now that sounds like a clue. Regardless, there are now witches in the Marvel Cinematic Universe.