Specter

Medium Undead, Chaotic Evil

AC 12 Initiative +2 (12)
HP 22 (5d8)
Speed 30 ft., Fly 50 ft. (hover)

Resistances Acid, Bludgeoning, Cold, Fire, Lightning, Piercing, Slashing, Thunder
Immunities Necrotic, Poison; Charmed, Exhaustion, Grappled, Paralyzed, Petrified, Poisoned, Prone, Restrained, Unconscious
Senses Darkvision 60 ft.; Passive Perception 10
Languages Understands Common plus one other language but can't speak
CR 1 (XP 200; PB +2)

Traits

Incorporeal Movement. The specter can move through other creatures and objects as if they were Difficult Terrain. It takes 5 (1d10) Force damage if it ends its turn inside an object.

Sunlight Sensitivity. While in sunlight, the specter has Disadvantage on ability checks and attack rolls.

Actions

Life Drain. Melee Attack Roll: +4, reach 5 ft. Hit: 7 (2d6) Necrotic damage. If the target is a creature, its Hit Point maximum decreases by an amount equal to the damage taken.