Hemonculus

The hemonculus knows the location of any Bloodied creature within 60 feet of it, unless the creature is a Construct or Undead.

The hemonculus doesn't provoke an Opportunity Attack when it flies out of an enemy's reach.

The hemonculus has Advantage on saving throws against spells and other magical effects.

Melee Attack Roll: +5, reach 5 ft. Hit: 5 (1d4 + 3) Slashing damage plus 3 (1d6) Necrotic damage, and the hemonculus attaches to the target. While attached, the hemonculus automatically hits the target with its Claw attacks.

The hemonculus can detach itself by spending 5 feet of its movement. The target or a creature within 5 feet of it can detach the hemonculus as an action.

The hemonculus magically draws blood from nearby creatures. Constitution Saving Throw: DC 13, each creature of the hemonculus' choice in a 15-foot Emanation originating from the hemonculus. Failure: 10 (3d6) Necrotic damage, and the target can't regain Hit Points until the start of the hemonculus's next turn. Success: Half damage only. Failure or Success: If the hemonculus is attached to a creature, the hemonculus regains Hit Points equal to the Necrotic damage taken by that target.