Carrionette Puppet Master

False Object. If the Puppet Master is motionless at the start of combat, it has advantage on its initiative roll. Moreover, if a creature hasn’t observed the Puppet Master move or act, that creature must succeed on a DC 15 Wisdom (Perception) check to discern that the Puppet Master is animate.

Magic Resistance. The Puppet Master has Advantage on saving throws against spells and other magical effects.

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

Multiattack. The Puppet Master makes three attacks, using Silver Needle or Tangling Strings in any combination. It can replace two of these attacks with one use of Enhanced Soul Swap if available 

Silver Needle. Melee Attack Roll:  +7 to hit, reach 5 ft., one creature. Hit: 12 (2d6+4) necrotic damage, and the target must succeed on a DC 15 Charisma saving throw or become cursed for 1 minute. While cursed in this way, the target’s speed is reduced by 10 feet, and it must roll a 1d4 and subtract the number rolled from each ability check or attack roll it makes.

Tangling Strings. Melee Attack Roll:  +7 to hit, range 30 ft., one creature. Hit: 12 (2d6+4) Slashing damage, and the target is Grappled (escape DC 15).

Enhanced Soul Swap (Recharge 5–6). The Puppet Master targets a creature it can see within 30 feet of it that is cursed by its Silver Needle. Unless the target is protected by a protection from evil and good spell, it must succeed on a DC 15 Charisma saving throw or have its consciousness magically swapped with a lifeless toy or an allied minion within 30 feet.

The Puppet Master gains control of the target's original body. The controlled body acts on the Puppet Master's Initiative immediately after its turn and obeys its telepathic commands (no action required). The target's consciousness is trapped in the toy's body, using the statistics of a Marionette (see accompanying stat block), but retaining its original Intelligence, Wisdom, and Charisma scores, as well as its alignment.

If the Puppet Master's body is destroyed, both the Puppet Master and the target die. A protection from evil and good spell cast on the controlled body drives the Puppet Master out and returns the consciousness of both creatures to their original bodies. The swap is also undone if the controlled body takes damage from the Puppet Master's Silver Needle.

Puppet Mastery. When the Puppet Master is hit by an attack, it can magically swap places with a controlled humanoid or a willing Construct minion within 15 feet of it. The Puppet Master takes no damage, and the chosen creature takes the damage instead.