Shadow Companion

Amorphous. The Shadow Companion can move through a space as narrow as 1 inch wide without squeezing.

Sunlight Weakness. While in sunlight, the Shadow Companion has disadvantage on attack rolls, ability checks, and saving throws.

Bodily Shackles. The Shadow Companion can only be brought out for a duration of 1 minute before needing to return to its users body, after this it can not be brought forth until its users next long rest.

Unacknowledged Action. The Shadow Companion follows your initiative order and goes directly after you. The conjuration will follow a command enlisted by its user as a bonus action or else it will dash, disengage, or hide on its turn.

Battle Waltz. The Shadow Companion occupies the same space as you unless it is directly moved to a different location. The Shadow Companion can be moved from your back to any dark space or shadow.

Phantom Fist. Melee Weapon Attack: + 2 to hit, reach 5 ft., one target. Hit: 12 (2d6 + 3) necrotic damage

Draining Darkness (Recharge 5-6). Ranged Weapon Attack: + 3 to hit, reach 30 ft., one target. Hit: 22 (5d6 + 5) necrotic damage. The Shadow Companion drains the life force of a living creature within range, this attack doesn't work on constructs or undead.

Shadow Restrain (1/day). Your shadow can retreat from your back to grab a hold of one other creatures shadow. If this creature is a humanoid then they must beat a DC 16 Constitution saving throw otherwise they are grappled. If the creature is a beast/monster  then it must succeed against a DC 17 Constitution saving throw or else be grappled as well.