Shutdown. If targeted by dispel magic, the horror must succeed on a Constitution saving throw against the caster’s spell save DC or fall unconscious for 1 minute or until it takes any damage.

Unusual Nature. The horror doesn’t require air, food, drink, or sleep.

Clockwork Heart. This creature only dies if its heart is destroyed. If brought to zero hp with its heart intact, it enters a coma-like state until its body is repaired.

Self Healing. This creature autorepairs itself over time, healing 1d4 per minute unless its heart is destroyed.  

Puppetrie. This creature can control inanimate objects at will, up to 3 at a time, and no bigger than a 5ft cube. Once defeated, these objects revert to normal objects. 

Puppets. Controlled weapons maintain their normal damage and type. 

Unarmed Strike. +2 to hit, reach 5ft, one target. Hit: 1d4 +3 bludgeoning damage.

Puppeteer. As an action, the puppeteer attempts to throw out arcane strings to target and seize control of a target. The target must succeed on a DC 18 dexterity saving throw, or the puppeteer latches on to the back of the target. The target is fully under the control of the puppeteer. The puppeteer’s AC becomes the AC of its controlled target + 1.