You have become more in tune with the Weave of Potentiality and the benefits it can provide you. You learn the Ruvar's Sapping Sting as well as gain the ability to harness Fragments of the Weave

Ruvar's Sapping Sting: (You sap the potential from one creature you can see in range. The target must succeed on a Constitution saving throw or take 1d4 necrotic damage and fall prone. On a natural 1, the creature effected also visibly ages that number of years.

You can then heal any creature within 30ft, including yourself, for the same amount as damage dealt.)

Additionally, once per day, during a short or long rest, you may commune with your patron to receive one fragment of the weave. 

When you make an attack roll, an ability check, or a saving throw while you have the fragment of the weave, you can dismiss the fragment to roll an additional d20 and choose which of the d20s to use. Alternatively, when an attack roll is made against you, you can dismiss the fragment to roll a d20 and choose which of the d20s to use, the one you rolled or the one the attacker rolled.