Im pretty sure heres my list of abilities
Superhuman Physical Characteristics,
Immortality (Types 1, 3, 4
and 8. As an Einherjar he is immortal as long as Reinhard Heydrich exists.),
Magic,
Enhanced Senses, Busōshoku
Haki,
Statistics Amplification (Can surround his body with an invisible armor to augment his defensive and offensive capabilities. He can also imbue physical objects with Busōshoku Haki),
Very high-level swordsmanship (Matched Rayleigh blow for blow in a duel for an extended period of time),
Martial Arts,
Light Manipulation (Ate the Pika Pika no Mi, a Logia-type Devil Fruit that allows him to create, control, and become light, in the elemental state it allows him to access his entire physical body genuinely becomes light and endows him with the ability to freely disperse and reform as well),
Regenerationn (Low-Godly),
Extrasensory Perception (
Ewigkeit users have a "third eye" which allows them to see through a person identity by viewing the color of the soul, and perceive invisible attacks such as Ren's Assiah),
Soul Manipulation (
Can devour souls and
can attack directly the soul of his targets),
Reality Warping (
Briah allows Ewigkeit users to impose their own desire on reality),
Reactive Power Level (
His Briah, Niflheimr Fenriswolf, will make it so that Schrieber will always be faster than his opponent),
Shockwave Generation (
Even while limiting himself to Assiah, Schrieber's movements release massive shockwaves that devastate his surroundings as he runs and jumps around),
Energy Absorption,
Berserk Mode,
Durability Negation (
Attacks of a Holy Relic user are impossible to nullify since they attack on both a physical and spiritual level), Immunity to natural poisons and diseases,
Energy Projection (Can use his ability to enhance the speed of physical attacks, can fire laser-like beams, bolts or energy blasts with great destructive power or use intensely bright light to blind opponents),
Transformation (Can use his ability to travel as light, does this through the Yata no Kagami technique, reflecting himself off of objects accordingly until he arrives at his desired destination),
Pseudo-Flight, Possibly
Body Control (He should be capable of altering the size and shape of his logia-form to some degree, and manipulate his body's form to avoid attacks more easily),
Elemental Intangibility,
Explosion Manipulation and
Heat Manipulation (with beams),
Limited Reactive Evolution (Adapted to Purgatory's environment after being there for countless decades),
Telekinesis (Can steal physical objects from afar through obstacles),
Invisibility (Can completely suppress his presence and prevent others from seeing him),
Absorption (Can steal the physical capabilities of others and add them to his own),
Resistance to
Mental Manipulation,
Spiritual Manipulation,
Conceptual Manipulation,
Biological Manipulation (
Purgatory transforms both physical and spiritual aspects of beings),
Perception Manipulation,
Poison,
Acid,
Heat,
Cold (After adapting to Purgatory he became unaffected by its environment),
Magic,
Possession,
Empathic Manipulation,
Spatial Manipulation,
Time Manipulation,
Matter Manipulation,
Reality Warping, and
Existence Erasure, Extreme resistance to pressure, Near immunity to heat, Immunity to disease and toxins,
Teleportation, Can attack on every level of existence (physical,
mental,
spiritual,
symbolic, etc.)