Boon of Argynvolst

General Feat (Prerequisite: Level 9+)

You gain the following benefits.

Revenants Protection.  Spectral warriors appear when you roll initative. The first creature you hit with an attack on your turn becomes the target of the warriors, which hinder its attacks. Until the start of your next turn, that target has disadvantage on any attack roll that isn’t against you, and when the target hits a creature other than you with an attack, that creature has resistance to the damage dealt by the attack. The effect on the target ends if you reach zero hit points or initiative ends. 

Spirit Shield.  The guardian spirits that aid you can provide supernatural protection to those you defend. If Revenants Protection is active and another creature you can see within 30 feet of you takes damage, you can use your reaction to reduce that damage by 2d6.