So I know that the bargains in the Night Court are symbolized with tattoos. But there was one scene in ACOWAR that I thought stuck. The picture is the bargain that I thought has to have some kind of impact on the future books of this series. I don't know if maybe it is or maybe it is just nothing but a promise. That's one of my theories for this. I'm not sure what to think of this sometimes, but I think that maybe in the future books that when they die they both die. But if you break the bargain like if Feyre were to die ( which I hope she doesn't) before Rhysand, the old magic or something will end up either taking their powers or taking their life. and vice versa. So that was a theory, let me know what you think of this. I'm curios to see how this might play out to be something or not at all.