Insanity. Narrak has advantage on saving throws against being charmed or frightened.
Magic Resistance. Narrak has advantage on saving throws against spells and other magical effects.
Sunlight Sensitivity. While in sunlight, Narrak has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.
Spellcasting. Narrak is a 5th-level spellcaster. His spellcasting ability is Charisma (Save DC 13, +5 to hit with spell attacks) Narrak has two 2nd-level spell slots, which he regains after finishing a short or long rest, and knows the following warlock spells:
Cantrips (at will): eldritch blast, friends, poison spray
1st–2nd level (2 slots): armor of Agathys, charm person, hex, hold person, ray of enfeeblement, spider climb
Armor of Shadows (Recharges after a Short or Long Rest). Narrak casts mage armor on himself
Shortsword. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit:5 (1d6 + 2) piercing damage.
One with Shadows. While he is in a dim light or darkness, Narrak can become invisible. He remains so until he moves or takes an action or reaction.