Minor in Divinatory Practices

While studying at a prestigious college for wizards you took a few classes not directly related to your subject, and depending on what those studies entail grant you additional features 

the Divinatory Practices taught by Professor Radaghast lead you down a path that enhances your Powers to sense events yet to be

You gain one use of Minor portent and when you cast a divination spell of second level or higher then you may regain a spell slot of first level

Minor Portent: you can replace any attack roll, saving throw, or ability check made by you or a creature that you can see within 60ft