Cloaker

Melee Weapon Attack: +7 to hit reach 5 ft. one creature. Hit: 11 (2d6 + 4) piercing damage and the target is grappled (escape DC 15). If the cloaker has advantage against the target the cloaker attaches to the targets head and the target is blinded and suffocating. Until this grapple ends the cloaker automatically hits the grappled creature with this attack. When the cloaker is dealt damage while grappling it takes half the damage (rounded down) and the other half is dealt to the grappled target. The cloaker can have only one creature grappled at once.

Melee Weapon Attack: +7 to hit reach 10 ft. one creature. Hit: 7 (1d6 + 4) slashing damage plus 3 (1d6) poison damage and the creature makes a DC 13 Constitution saving throw. On a failure it is poisoned until the end of the cloakers next turn.

Each non-aberration creature within 60 feet that can hear its moan makes a DC 13 Wisdom saving throw. On a failure it is frightened until the end of the cloakers next turn. When a creature succeeds on this saving throw it becomes immune to the cloakers moan for 24 hours.

The cloaker magically creates flickering illusions of itself in its space. Attacks on it have disadvantage. This effect ends after 1 minute when the cloaker enters an area of bright light or when it successfully grapples a creature.