Dread Specter (5e Creature)
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Medium undead, chaotic evil
Damage Resistances acid, cold, fire, lightning, thunder; bludgeoning, piercing, and slashing from nonmagical attacks
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.
Life Drain. Melee Spell Attack: +9 to hit, reach 5 ft., one creature. Hit: 63 (14d8) necrotic damage. The target must succeed on a DC 16 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.