School of Divination (Harbinger)

A prophet is often unwelcome, for no one wishes to hear of their future misfortunes. A warning taken to heart later feels unnecessary if the tragedy is never known, and a warning disregarded is often blamed as the cause of the tragedy itself. Your training in Divination has made you better at noticing the omens of great and lesser events. 

Divination Savant

Beginning when you select this school at 2nd level, the gold and time you must spend to copy a divination spell into your spellbook is halved.

Harbinger

Starting at 2nd level when you choose this school, you begin to notice omens of lesser events. Once every short rest, when any creature, trap or effect deals damage which involves damage rolls to any number of creatures that you see, you may use your Reaction to alter the damage. You must decide to use this feature before the damage is rolled. Choose one of the following two effects:

Visions of Great Damage

After rolling the relevant dice, each dice which is below 1 less than the maximum, becomes 1 less than the maximum instead.

Visions of Lesser Damage

After rolling the relevant dice, each dice which is above 2, becomes 2 instead.

Oracle

Beginning at 6th level, you begin collecting your thoughts on the omens you see each day. This allows you to cast Augury once every long rest, without expending a spell slot. You do not learn Augury, nor do you add it to your spellbook.

Eye for Detail

Starting at 10th level, looking at omens everywhere has allowed you to become better at noticing things that aren't as they should be. You gain proficiency in one of the following skills: Investigation, Nature, Animal Handling, Insight or Perception. Additionally, when doing an Investigation check, and if you have proficiency in the Investigation skill, you can choose to add twice your proficiency modifier instead of using your previous calculation. 

Miracle

Starting at 14th level, you start to notice the more subtle and rare omens of the most unlikely events. Once every long rest, when a creature, trap or effect deals damage which involves damage rolls to any number of creatures that you see, you can use your Reaction to guarantee that the damage dealt is either the minimum possible, or the maximum possible.