Awakened Marionette

Puppeteer’s Strings. The marionette uses long, whip-like strings to grapple and puppeteer other creatures. Such strings are objects (AC 12, hp 15) and are vulnerable to slashing damage. Destroying the strings grappling a puppeteered creature frees it and ends the effect.

Multiattack. The marionette makes two Lash attacks. The marionette may forgo making a Lash attack in this manner to instead make a Ravel attack.
Lash. Melee Weapon Attack: +5 to hit, reach 20 ft., one target. Hit: 9 (1d12+ 3) slashing damage.
Puppeteer. The marionette uses its strings to puppeteer the body of the creature it is grappling. The target must succeed on a DC 13 Strength saving throw or be forced to take a reaction to make a single weapon attack against a target of the marionette’s choice within reach.
Ravel. Melee Weapon Attack: +5 to hit, reach 20 ft., one creature. Hit: The target is grappled and restrained (escape DC 13).