Age

You look at a creature or object and speak a word of your choice and then turns the hands of time backwards or forwards using the face of your clock. After this you will pluck a strand of your own hair and let it fall.

For each level of spell slot you can make a creature or object, older or younger by that many years-starting at 3rd level 

3rd level slot- 3 years aged 

4th level slot- 4 years aged

3rd level slot +4th level slot+ 5th level slot- 12 years aged