I haven’t really yet bought the sorta popular headcanon that Lydia is a witch, and I’m way more interested in the idea of her being completely immune, including to magic. Word of God, last I heard, is that Stiles himself isn’t magic, but his will meets the right criteria that allows him to wield objects that are.
Basically I really dig duality (and trinities, but that’s for another drawing), and the idea of Stiles sparking magic while Lydia smothers it is delightful.
Will Jade ever stop using circles? We just don’t know.