You can selectively rewind the state of anything you touch, including yourself, to a previous state. You can do things such as rewinding your physical state to heal injuries or repair objects, rewinding someone’s mind to erase select portions of their memories, or even rewind someone’s entire state to resurrect them. You can selectively choose what aspects to rewind such as only physical, to restore someone to a younger and healthy body without erasing their memories, or perhaps just healing someone’s injuries they have gotten from training without removing any benefits from said training.