Amnayel, the Bloated Angel

Angelic Weapons. Amnayel's weapon attacks are magical. When Amnayel hits with any weapon, the weapon deals an extra 5d8 radiant damage (included in the attack).

Divine Awareness. Amnayel knows if he hears a lie.

Innate Spellcasting. Amnayel's spellcasting ability is Charisma (spell save DC 20). Amnayel can innately cast the following spells, requiring no material components:

At will: detect evil and good, invisibility (self only)

3/day each: blade barrier, dispel evil and good, flame strike

1/day each: control weather, insect plague

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

Shivastaba's Vessel. Amnayel's left arm is the host of Shivastaba, a normally slumbering greater demon. While in initiative, if there is an enemy that Amnayel can see within 120 ft. of him, he must make a DC 20 Charisma saving throw at the beginning of his turn. He must also make this saving throw upon taking a critical hit. On a failure, Shivastaba takes over Amnayel's body for one turn per point that Amnayel failed the save. While posessed by Shivastaba, Amnayel's eyes glow red, his alignment changes to Chaotic Evil, and he gains the following changes:

-Amnayel's Angelic Weapons feature becomes the Fiendish Weapons feature, which functions the same, except it does necrotic damage and deals an extra 3 dice of damage (for a total of 8d8). His Shadowflame action also deals 3 extra damage dice (for a total of 8d8) (Included in both of the attacks).

-Amnayel's resistance to Cold, Fire, and Lightning damage become Immunity to those damage types.

-Amnayel gains advantage on all attack rolls, and all attack rolls against Amnayel also have advantage.

-Amnayel can use Legendary Actions.

-Amnayel cannot cast spells or use his Healing Touch action. Any spells that he is currently concentrating on are unaffected.

While Amnayel is under Shivastaba's control, he must make one attack against a creature per turn. If he doesn't, Amnayel regains control of his body early. A creature that presents Amnayel with a holy symbol and reminds him of his identity can also allow him to make the save again, regaining control of his body on a success. If the creature is a cleric or paladin of a good aligned deity, Amnayel makes the save with advantage.

If Amnayel dies, Shivastaba dies as well; however, unless Amnayel dies on the Abyss, Shivastaba reforms instantly on that plane.

Multiattack. Amnayel makes two attacks.

Greatsword. Melee Weapon Attack: +12 to hit, reach 5 ft., one target. Hit: 21 (4d6 + 7) slashing damage plus 22 (5d8) radiant damage, or 36 (8d8) necrotic damage while under Shivastaba's control.

Shadowflame. Ranged Spell Attack: +12 to hit, range 40/120 ft., one target. Hit: 27 (6d8) necrotic damage, or 36 (8d8) necrotic damage while under Shivastaba's control. Any humanoid creature killed by this attack rises as a zombie one minute later permenantly under Amnayel's control. Hit or Miss: Amnayel must immediately make a saving throw as per his Shivastaba's Vessel trait.

Healing Touch (4/Day). The planetar touches another creature. The target magically regains 30 (6d8 + 3) hit points and is freed from any curse, disease, poison, blindness, or deafness.

While under Shivastaba's control (And only when under Shivastaba's control), Amnayel can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature’s turn. Amnayel regains spent legendary actions at the start of his turn.

Attack. Amnayel makes one Greatsword attack.

Stunning Howl (Costs 2 Actions). Amnayel emits a blood-curdling howl. Each creature within 10 feet of him must make a DC 15 Constitution saving throw or be stunned until the end of their next turn.

Aura of Destruction (Costs 3 Actions). The red light from Amnayel's eyes overflows its sockets, pouring out in a 30 foot radius sphere. The sphere lasts until the end of Amnayel's last turn. Creatures in that aura must make a DC 15 Strength saving throw at the start of their turn or take 10 (3d6) force damage from the immense pressure. Objects automatically take this damage, and if an object that is Small or larger is reduced to 0 hit points by this ability, it explodes, forcing every creature that is within a sphere with a radius of half the object's largest dimension (for example, a large object, with a 10 foot side, makes a sphere with a 5 foot radius from itself) to make a DC 15 Dexterity saving throw or take 7 (2d6) bludgeoning damage from the shrapnel.

Additionally, all ranged weapon attacks (including thrown weapons) are made with disadvantage, and any attack that misses explodes, as described above.