Brandon Sanderson Magic System

One idea for a new Brandon Sanderson magic system could be based on the manipulation of time. This could involve the ability to speed up or slow down time for oneself or others, which you already did travel through different eras and potentially even change the course of history. Users could be trained as timekeepers in quotes to hone their abilities and learn to use the magic responsibly. System could also have limitations such as not being able to change certain events or the possibility of causing paradoxes.