Ascyle

Spellcasting. Ascyle is a 20th-level spellcaster. Its spellcasting ability is INT (spell save DC 24, +16 to hit with spell attacks). Ascyle has following Wizard spells prepared:

Cantrips (at will): Spare the Dying, Decompose

1st level (4): Case Fear, Inflict Wounds,  Healing Word

2nd level (3):  Wither and Bloom

3rd level (3): Animate Dead, Summon Undead, Spirit Shround, Mass Healing Word

4th level (3): Spirit of Death, 

5th level (3): Dense Macabre, Raise Dead, Mass Cure Wounds

6th level (2): Harm, Create Undead

7th level (2): Tether Essence

9th level (1): Time Ravage, Power Word Heal

Necrotic Gaze. Ascyle makes eye contact with one target within range, the target must make a DC24 CON saving throw or suffer 10d6 necrotic damage and 2d8 psychic damage. Halved on a successful save. Range 180ft.

Shepherd's Herald Melee Weapon Attack: +19 to hit, reach 5 ft., # target. 4d8+10 bludgeoning damage and 4d6 necrotic damage.

Multiattack. Ascyle makes three attacks, only one of which can be a necrotic gaze.

Not Your Time. When a creature that Ascyle can see drops to 0hp, Ascyle can choose to heal that creature for half their total hit points. This can be used three times per day.

Ascyle is the god of death, war, and destruction. Though he remains peaceful with those who have already passed, he does not lack destructive power. Ascyle has four (4) legendary actions that he can take at initiative count 20,

I'm Not Done With You. (Costs 1 Action). One creature that Ascyle chooses will immediately drop to 0 hit points until their next turn, at which point they will be healed to full. They must then succeed a constitution (DC18) saving throw or become vulnerable to necrotic damage. This creature can re-roll this save at the beginning of each turn.

Reinforcements. (Costs 2 Actions). Skeletons rise from the ground in an unoccupied 5ft square, firing a barrage of arrows at Ascyle's command. The skeletons remain for three rounds, or until dispelled using a bonus action. Until dispelled, the skeletons can fire again at initiative count 20, if commanded to using an action on Ascyle's turn. Ranged Attack +17 to hit, 10d6 piercing damage and 2d8 necrotic damage.

Legendary Resistance. (Costs 1 Action). If you fail a saving throw you can choose to succeed instead.

Ascyle, being the god of death, is not keen on dying. When he is reduced to half his total hit points, he gains resistance to all damage, magical and non-magical. He also gains the following mythic action.

Recall Army. At any point after gaining this action, Ascyle can blow a ram's horn and dispel all undead in the area, returning to full health and losing resistance to magical attacks.