Prophetic Bloodline

You are gifted with the powers of fate, gifted with the ability to manipulate the strands of reality in order to shape the future how you see fit.

Branching Fate

Starting at level one, you can see different branching strands of fate and pluck out those strands that best suit you.
At the end of a Long Rest, roll a number of d20 equal to your proficiency bonus, and write each separate result down. You may choose to This is your Fate Pool.
Before making an Ability Check, Saving Throw, Attack Roll, or Death Save, you may instead choose to use one number from your Fate Pool to replace that d20 roll. Remove that number from your Fate Pool. Your Fate Pool resets on a long rest.

Scrying Eye

Starting at 6th level, once per long rest, when using a die from your Fate Pool, you may instead turn a number you use into a 20. This counts as a critical success for the purposes of Attack Rolls.

Portent

Once per short rest, you may cast Augury at will with no spell components as a bonus action.

Twist of Fate

Starting at 14th level, you begin to understand the flow of the Aether, and how best to bend time and fate around your enemies. When an enemy within 50 feet of you makes an Attack Roll, Saving Throw or Ability Check, before the result is declared, you may use a Reaction to replace the result with a die from your Fate Pool. Subtract that result from your Fate Pool. 

Destiny's Champion

You begin to finally master the abilities granted to you by your blood, seeing each and every branching timeline as a river to move with, not against. 
Starting at 18th level, you know the Foresight spell. Once per Long Rest, you may cast Foresight on yourself, as an action, using no spell components or spell slot.