Boon of Fucking Hell

Epic Boon Feat (Prerequisite: Level 19+)

You gain the following benefits.

Ability Score Increase. Increase one ability score of your choice by 1, to a maximum of 30.

Now Don't Be A Dumbass. You have a pool of 400 Health. As a Bonus Action, you can expend any number of this health pool to heal allies. On every increment of 50 health the healed ally gets the effect of aid that gets upcasted in every increment. Allies that are healed can also use a Reaction when downed to use half of the amount they were healed by as temporary hit points.  You regain your health points every dawn.

By The God's Really.  When an ally is killed you can use 200 points in your health pool to cast True Resurrection. This can only be used once per dawn.