Haha, 'did you and him ever smash?' Oh, goodness.
Alright. What I had in mind were illusions that affect the mental perceptions of other beings in such a way as to make it appear as if time was slowed, sped up, etc.
As for Divination, it would be the standard process of casting a spell to find information or to see a few seconds/minutes/hours into the future. That type of thing.
If it was actual Chronomancy, I'd have the spells require a certain amount of years from his life to cast.