>>93600047Wanda's powers are connected to her emotions, and those powers come from Chthon.
Chthon likes to corrupt good things (it's his fetish), whereas Wanda seeks to use his power for good.
This is a perfect set-up for a myriad of stories, as you have a power set that is challenging, and an antagonist who cannot be defeated by force because he literally is that force.
And what do Marvel's writers do with that?
They recycle possession and crazy stories over and again, because they have little interest or grasp of Wanda's character.
Even in Nights of Wundagore, she fought Chthon from within, preventing him from killing Pietro and Bova. In Serpent Crown Affair she fought and outwitted Set.