Feats

Boon of the Night Spirit

Prerequisite
Level 19+
Ability Score Increase
+1 to any ability score (max 30)
Source
XPHB

You gain the following benefits.

Merge with Shadows

While within Dim Light or Darkness, you can give yourself the Invisible condition as a Bonus Action. The condition ends on you immediately after you take an action, a Bonus Action, or a Reaction.

Shadowy Form

While within Dim Light or Darkness, you have Resistance to all damage except Psychic and Radiant.