Craven

Deathly Weapons. The Craven weapon attacks are magical. When the planetar hits with any weapon, the weapon deals an extra 5d8 Necrotic damage (included in the attack).

Divine Awareness. The Craven knows when it hears a lie. 

Magic Resistance. The Craven has advantage on saving throws against spells and other magical effects. 

Relic Plate of the Grave: The Super Heavy Armor of the Craven gives it advantage on strength Checks while Giving Disadvantage on all Dexterity checks. The armors massive bulk also gives advantage to ranged weapon attack against it. 

Raven Cloak: the Craven can Summon  4d10 Ravens once per day. The ravens can act independently and anyone who kills a raven suffers 4 (1d8) necrotic damage and is known to the Craven.

Multiattack. The Craven makes three melee attacks or two ranged attacks.

Scythe. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 21 (4d6 + 7) slashing damage plus 22 (5d8) Necrotic damage.

Death Curse (3/day):  The craven casts a death curse on all creatures within a 120ft sphere of it. Every creature who does not possess a holy symbol or within a sanctified holy sight Must make a  DC 16 WIS Save or take 22 (5d8) Necrotic damage or 12 (3d6) piercing damage on a successful save. 

Wrist Cannon: Ranged weapon attack: +8 to hit, range 40 foot cone. Hit: 16 (3d6+4) Bludgeoning damage plus 18 (3D8+2) Fire damage. 

Return Fire: whenever the Craven takes Damage due to an attack the Craven makes a ranged Weapon attack at the target that Damages it.