Adjutant to Kas, Devotee of Orcus (Legacy)

Evasion. If this creature is subjected to an effect that allows it to make a Dexterity saving throw to take only half the damage, it instead takes no damage if it succeeds on the saving throw and only half damage if it fails, provided it isn’t Incapacitated.

Master of the Grave. While within 30 feet of this creature, any Undead ally of it makes saving throws with advantage, and that ally regains 1d6 hit points whenever it starts its turn there. (Including itself.)

Aura of Death. This creature emanates a deathly aura that extends 30 feet in every direction from its space while it isn’t Incapacitated. The aura is blocked by total cover. While in the aura, the creature and any friendly undead are immune to the Frightened condition and have resistance to radiant damage. Enemies suffer disadvantage on death saving throws while in the aura.

Undying Soul (Recharges after a Short or Long Rest). If this creature is reduced to 0 hit points, it immediately makes a DC 10 Constitution saving throw. If it succeeds, it is instead reduced to 1 hit point.

Legendary Resistance (3/Day). If this creature fails a saving throw, it can choose to succeed instead.

Unusual Nature. This creature doesn’t require air, food, drink, or sleep.

Multiattack. This creature makes three Wand of Orcus or Deathly Ray attacks.

Wand of Orcus. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 8 (1d6 + 5) bludgeoning damage plus 13 (2d12) necrotic damage. If you have advantage, add an additional 21 (6d6) necrotic damage.

 Deathly Ray. Ranged Spell Attack: +10 to hit, range 60 ft., one target. Hit: 27 (5d8 + 5) necrotic damage.

Spellcasting. This creature casts one of the following spells, using Charisma as the spellcasting ability (spell save DC 18):

At will: mage hand, message

2/day each: dimension door, fear

1/day each: cloudkill, cone of cold

This creature 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. It regains spent legendary actions at the start of its turn.

Attack. This creature makes one Wand of Orcus or Deathly Ray attack.

Move. This creature moves up to its speed without provoking opportunity attacks.

Summon Undead (Costs 2 Actions). This creature summons up to five Skeletons or Zombies in unoccupied spaces within 30 feet of it. They remain until destroyed. Undead summoned in this way roll initiative, act in the next available turn, and obey this creature. It can have no more than five Undead summoned by this ability at a time.