It is in the comics carnage vol 2 #8 and #9 That the darkhold is a weakness of gods and monsters including the dark god chthon himself. The darkhold holds power from before creation itself from before well....before.
They also connected the darkhold to Atlantis before it fell. And we all know storm has direct lineage from Atlantis. The plot is like literally right there! All they need to do is put ink to paper. This feels very interesting because unlike any of the others storm is not merely a mystic but possibly a being of eldritch origin. It would be amazing if they could explore that as a plot or story but alas it's not in the cards for storm. Wanda is getting that development I am happy for her.