Ability Score Increase. Your Intelligence increases by 2 and your Wisdom increases by 1.

Skills Deception, Perception, Persuasion, Stealth

Damage Resistances bludgeoning, piercing, and
slashing from nonmagical weapons

Damage Immunities fire, poison

Condition Immunities charmed, exhaustion, frightened, paralyzed, petrified, poisoned

Senses darkvision 120 ft.

Languages Infernal, Common, telepathy 

Devil's Sight. Magical darkness doesn't impede the doll's darkvision.

Inanimate. While the doll remains motionless, it is
indistinguishable from any ordinary doll.

Innate Spellcasting. The doll's spellcasting ability is
Charisma (spell save DC 14). The doll can innately
cast the following spells, requiring only verbal
components:
At will: suggestion
1/day each: dominate person, modify memory

Undying Evil. If the doll is destroyed, it regains all its
hit points and reappears at a nearby location in 24
hours unless a remove curse spell is cast on its
remains.

Giggle. One creature of the doll's choice within 30
feet of it must succeed on a DC 14 Wisdom saving
throw or take 2d6 psychic damage and become
frightened for 1 minute. The target can repeat the
saving throw at the end of each of its turns, with
disadvantage if the doll is within line of sight, ending
the effect on itself on a success.