I Do Not Know You

Your patron is I Do Not Know You, also called The Stranger. The Stranger is an incomprehensible "god" of the fear of being the uncanny and unknown. It commonly manifests as mannequins, taxidermy, and masks. It is a part of a group of 14 other fear entities, being Forever Deep Below Creation, The Crawling Rot, The Forever Blind, The Lightless Flame, Terminus, Viscera, The Everchase, The One Alone, The Slaughter, The Twisting Deceit, The Ceaseless Watcher, The Falling Titan, The Mother Of Puppets, and The Future Without Us.

Expanded Spell List

The Stranger lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Stranger Expanded Spells

Spell Level	Spells
1st	illusory script, charm person
2nd	alter self, mirror image
3rd	fear, slow
4th	phantasmal killer, hallucinatory terrain
5th	awaken, mislead

Strange Experience

Due to your experience as an Avatar of The Stranger, you gain expertise in deception.

Strange Conscription

Beginning at 6th level, your patron bestows upon you the ability to recruit a mimicry of life, such as taxidermy, a wax statue, and the like, as an action. You may do this twice per short rest. When you recruit this mimicry, you can instruct them as a free action, their turn is directly after yours, and they follow these instructions, even if it harms the creature. The creature has the exact same stats as what it is mimicking, with the exception of health, which is halved. You may not recruit a creature with a higher CR than half your warlock level. 

Familiarity With Lies

At 10th level, You gain expertise in insight.

Uncanny Visage

Once you reach 14th level, The Stranger gives you a gift. The gift of a new body, a mannequin. As well as gaining advantage on death saves, as an action, you can skin a corpse, and keep the skin. As another action, you may wear any skin you have, Including your previous body. You can perfectly replicate the skin owner's voice. This is not a magic ability, nor does it have a time limit. True sight sees through your disguise.

It takes an insight check against your spell dc (DC {{savedc:cha}}) to see through the disguise.

When someone sees your true self, you can choose to make a wisdom save against your spell DC (DC {{savedc:cha}}) or be frightened.