Includes SPOILERS for Wicked: Part 1!Wicked introduces Elphaba as a powerful magical user, and there’s a lot to know about her abilities and where they come from. Cynthia Erivo leads Wicked’s cast as Elphaba, the girl who would one day become the Wicked Witch of the West, following her story in the Shiz University with Glinda the Good (Arianna Grande). Elphaba stands out in the story as a highly powerful magic user, a rarity in Oz at this point in the story. Wicked is based on the musical of the same name and the 1995 novel by Gregory Maguire, which provides some added exposition.

https://screenrant.com/wicked-elphaba-magic-powers-explained/