Evil Doctor Strange in Multiverse of Madness

Whenever we watch Cloak Of Levitation inside the Doctor Strange trailer, we see it torn.

When the Minotaur had torn Doctor Strange's Cloak Of Levitation, it was stitched into a comic book.

Minotaur

There comes a time when Doctor Strange uses black magic to fight enemies, and we're shown the same thing inside the trailer.

Black Magic

And that's exactly what Doctor Strange did inside "what if"

What if

You can see wanda's hands here, which clearly means that she is using black magic.

Wanda using Black Magic

which we also see agatha doing inside wandavision series

It is also possible that Doctor Strange learned all this power from wanda