Divination Wizard

Divination Savant

Starting at 2nd level when you take this subclass, you can add 1 divination spell to your spellbook for free. Whenever you gain a level in this class, you may add another divination spell to your spellbook for free.

Additionally, the time and gold it takes you to copy divination spells into your spellbook is halved.

Portent

Starting at 2nd level when you choose this school, glimpses of the future begin to press in on your awareness. When you finish a long rest, roll two d10s. For the first d10, you subtract the number rolled from 21. For the second d10 you roll, add the number rolled to 0. Record the two totals. You can replace any attack roll, saving throw, or ability check made by you or a creature that you can see with one of these foretelling rolls as a reaction.

Each foretelling roll can be used only once. When you finish a long rest, you lose any unused foretelling rolls.

Expert Divination

Beginning at 6th level, casting spells allows flashes of the future to come to you, preparing you for what's to come. When you cast a spell of 2nd level or higher using a spell slot, you regain one expended spell slot. The slot you regain must be of a level lower than the spell you cast and can't be higher than 4th level.

The Third Eye

Starting at 10th level, you can use your bonus action to increase your powers of perception. When you do so, choose one of the following benefits, which lasts until you are incapacitated or you take a short or long rest. You can't use the feature again until you finish a short or long rest.

Darkvision. You gain darkvision out to a range of 60 feet, and have advantage on perception checks that rely on sight.

Greater Comprehension. You can read any language, and have advantage on skill checks that use Intelligence.

See Invisibility. You can see invisible creatures and objects within 30 feet of you that are within line of sight.

Additionally, you may reroll one of your d10's that you roll for the Portent feature. You must use the new roll.

Greater Portent

Starting at 14th level, the visions in your dreams intensify and paint a more accurate picture in your mind of what is to come. You roll three d10s for your Portent feature, rather than two. The third d10 can either be subtracted from 21 or added to 0, your choice.