"... I don't see why not." Wei Wuxian decides after a bit of consideration. "I mean, it doesn't exist right now, but it'd just be a selective ward, I've made lots of those. You probably want something etched, rather than something like a paper talisman, don't want it getting wet and falling off at the wrong moment."

Does everyone see how Very Good Wei Wuxian is being, not making grabby hands at Bucky's arm and starting experimenting right here? He's being so good. Someone should give him soup.