Medium Elemental, Neutral Alignment

Damage Resistances: Acid, Cold, Fire, Lightning, Thunder, Bludgeoning, Piercing, and Slashing.

Damage Immunities: Necrotic, Poison

Condition Immunities: Charmed, Exhaustion, Grappled, Paralyzed, Petrified, Poisoned, Prone, Restrained, Unconscious

Senses: Darkvision 60 ft., Passive Perception 10

Languages: Understands all languages of the summoner.

Proficiency Bonus +2

Incorporeal Movement. The servant 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.

Drain. Melee Spell Attack: +4 to hit, reach 5 ft., one creature. Hit: 10 (3d6) necrotic damage. The target must succeed on a DC 10 Constitution saving throw or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the creature finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.

Smite. Melee Spell Attack: +4 to hit, reach 5 ft., one creature. Hit: 10 (3d6) radiant damage. The target must succeed on a DC 10 Constitution saving throw or it suffers from disadvantage on its next attack before the end of its next turn.