School of Deduction

Wizard society is not a place of anarchy, despite many believing that being a wizard gives you the right to use your magical talents to rule and run as you please, there are other wizards hose sole job is to hunt down those who misuse the weave. Wizards from the School of Deduction are trained to track down other magic users, learn about their abilities and either bring this information to an authority, or bring the magic user body, which ever they prefer.

Divination Savant

At 3º level, choose two Wizard spells from the Divination school, each of which must be no higher than level 2, and add them to your spellbook for free.

In addition, whenever you gain access to a new level of spell slots in this class, you can add one Wizard spell from the Divination school to your spellbook for free. The chosen spell must be of a level for which you have spell slots.

Guided Deduction

At 3º level, you always have the Augury spell prepared and can cast as a bonus action without using a spell slot a number of times equal to your intelligence modifier + 1/3 of your wizard level.

Detective Mind

At 6º level, your investigative mind reached new heights. When you reach 6º Level you gain proficiency in Investigation, Insight and Perception. If you already have proficiency in those skills you gain expertise. Additionally, you can add your Intelligence modifier to your Insight, Perception and Medicine skill checks.

Also at 6º level, when you use the study action you can gain 30 feet (9m) of truesight for 1 minute. Once you use this feature you must finish a short or long rest to use it again.

Your next move is...

At 10º level, you have learned how to read your opponent like a book. As a bonus action you can ask the DM what will a creature do in their next turn, the DM shall do as he said, because DM's never lie. You gain advantage on your next d20 roll and the chosen creature has disadvantage on his next d20 roll.

You can use this feature a number of times equal to your Intelligence modifier.

That's how they did it

At 14º level, you can use a magic action to recreate the effects of a spell or magic item you know have been used in the last 30 days, once you do so, you can't replicate the same effect with a new use of this trait.
You can use this trait a number of times equal to your proficiency bonus, regaining all expended uses when you finish a long rest.