then maybe illusionist or time mage.
astrologist may have gravity but so can other jobs have it,he is more about using the star and divination not about being a time manipulating magician.

so those two classes as healers could be a good healer classes.
using illusions to soothe the mind and mend the body while confusing the enemies or manipulate time to restore the body to its original state and slow enemies and stopping their time.