Boon of Exquisite Radiance
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.
Eternal Rest. Creatures you reduce to 0 Hit Points can't become Undead.
Powerful Radiance. When you make a damage roll that deals Radiant damage, you can instead use the highest number possible for each damage die. Once you use this benefit, you can't do so again until you finish a Long Rest.