Time magic? Hmm. Time magic is pretty difficult to use in a roleplay. It would likely have to be like some crazy event that would have to include like every player. Or we could branch it off into a whole new timeline in another thread. The magic would have to be like some kind of ritual that a big group of characters would have to participate in in order for it to work. If you're thinking smaller scale, maybe like a single use rune or something, but it would have some seriously hefty costs. Magic always has a price, and time magic would be one of the most expensive.