Just dropping a bug (ish, maybe) note here. I don't have discord if there's a modification discussion there.
Just a spelling error, in the Act 2 firsts Def Against Dark Arts evesdrop in the classroom by Sally, Helena said effects could "Wain" if wands with the wrong core were used. (Hint, maybe what happened to the memory loss spell?)
I think the word meant was "Wane", which means decrease, rather than "Wain", which is a large generally Ox-drawn cart.