The idea wasn't fleshed out entirely. But the part that I knew would drive mechanics/GMs batty was the idea of being able to skip back in time to essentially "redo" an action. Or slowing/speeding up time for a duration to allow for half/twice as many actions, respectively. Or simply skipping ahead as a means of escaping the situation entirely. Speeding up a body's aging process by surrounding them with a personal chronal vortex. Whatever.
The options are certainly there but many of them would need their own special mechanics, so I don't want to bog down the system.
