Talk:White Frost/@comment-112.196.150.130-20151005050605/@comment-78.102.53.62-20171025154002

you use silver sword because they came from a different world, like all the monsters. That's the way to differentiate monsters from, say, a bear: monsters came from other worlds, bears didnt.

Like other comments said, they travel on 'The Spiral'; I think its only mentioned once or twice in the books and never explained. World of the Witcher is on said 'Spiral', so they can, theoretically, visit this world whenever they like, although it most likely costs them lot of power and resources. My theory is that 'Spiral' spirals; it moves and allows acces to different worlds in time, so Red Riders can stalk her through different worlds, but only in time and probably not all of them; Ciri can jump freely, without any restrictions, and is probably the only person in the multiverse capable of this. Plus she has other crazy nature-defing powers.