Derres Dastardly Doppelganger

As part of the Casting of this spell, you form a Clay Doll roughly your shape, using the magical clay included in the components. You can, over the course of an hour, form the Doll without casting this spell, and then cast it at a later time over the course of 10 minutes instead, using the finished Doll.

After you finish casting the Spell, the Doll animates and it's outward appearance changes to match yours, indistinguishable at first glance. The Doll has a STR, DEX and CON of 10, and an INT, WIS and CHA of 5. It has an AC of 14, a speed of 30 ft., Darkvision of 60 ft., an amount of HP equal to twice the number of your Hit Dice when casting and Immunity to Acid, Poison and Psychic Damage. It is hollow inside and fails to produce any kind of sound not originating from interaction with it's environment. It follows verbal orders you give it to the best of it's Ability, and can comprehend simple tasks, such as pulling a Lever, taking a menacing Stance, blocking a passageway etc.

The Doll remains until it is reduced to 0 HP or the Spell is Dispelled, upon which it turns into non-magical Dust. You can control a maximum Amount of Doll's equal to your Spellcasting Modifier.

Detect Magic and similar Spells and Effects do not reveal the magical Nature of the Doll. Inspecting it with True Sight, succeeding on an Investigation Check against your Spell Save DC while within 30 ft. or dealing any amount of Damage to it reveals the Doll's Nature.

While an active Doll is within 60 ft. of you that you can either see or know the exact location of, you can use your reaction to magically trade places with it when you would receive damage, causing the Doll to take the full damage instead. A creature with a higher Passive Perception than your Spell Save DC notices the Swap, otherwise an Attacker would assume you always were a Doll.

If you would receive Damage that would reduce you to 0 HP and a Doll that can see you is within 60 ft., it instead uses it's reaction to trade places with you as described above.