Base Class: Warlock
You made a pact with an entity known as ‘The One Who Is Many’ after it visited you in a dream.
Uncanny Familiar
Starting at 1st level, you can cast the Find Familiar spell without using a spell slot. The Familiar has an unnerving presence to it, and can be controlled by your Patron at will. You can also command the Familiar to cast Eldritch Blast.
Master of the mind
When you attempt to charm a creature when casting a spell, that creature has disadvantage on their saving throw. You also gain advantage against being charmed, as well as any spell which affects the mind. Additionally, as a reaction you can reduce physic damage you take by your charisma modifier.
Channel the Darkness
Starting at 10th level, you can choose to add your charisma modifier + your character level to the damage of a weapon, unarmed, or spell attack. The extra damage is dealt in necrotic damage. Additionally, the first time you take necrotic or radiant damage after a short rest, you take half damage.
You can only use this feature once after a short rest.
Doppelgänger
Starting at 14th level, you can summon a spectral copy of yourself which mimics your attacks.
Each time you attack a creature, you can spend your bonus action to make an additional attack with your Doppelgänger. The Doppelgänger lasts for 10 rounds, or 10 minutes, and can be dismissed as a bonus action.
Once you use this feature, you can’t use it again until you finish a long rest.
Fighter Doppelgänger
Starting at 14th level, you can summon a spectral copy of yourself which mimics your weapon attacks and unarmed strikes.
Each time you attack a creature, you can spend your bonus action to make an additional attack with your Doppelgänger. The Doppelgänger lasts for 10 rounds, or 10 minutes, and can be dismissed as a bonus action.
Once you use this feature, you can’t use it again until you finish a long rest.
Spellcaster Doppelgänger
Starting at 14th level, you can summon a spectral copy of yourself which mimics your spells.
Each time you attack a creature, you can spend your bonus action to make your Doppelgänger cast the spell again. The spell must target a creature. Spell attacks made by the Doppelgänger deal necrotic damage, while the duration of buff or debuff spells are doubled. Concentration on spells must be broken twice if a Doppelgänger cast it. The Doppelgänger lasts for 10 rounds, or 10 minutes, and can be dismissed as a bonus action.
Once you use this feature, you can’t use it again until you finish a long rest.