“Casting spells” is a really nice way of describing it. I’d disagree on scrollable text though. There’s ink, handwriting (meticulous or rushed?), paper quality, scent, paper type (legal paper vs a postcard), presence (save it as a memento or use as a reminder in your periphery), along with other assumptions because, “it’s 2023 and someone just sent a letter?” My opinion’s probably somewhere between two and three. Maybe letters are video calls now and emails are something else?