Xytherion the Undying

Necrotic Shield: Xytherion the Undying gains +3 to his AC for each active [Tooltip Not Found] Undead Pillar on the battlefield.

Innate Spellcasting: The sorcerer's innate spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). The sorcerer can innately cast the following spells, requiring no material components:

• At will: chill touch, detect magic, mage hand, prestidigitation
• 3/day each: counterspell, dispel magic, fireball, fly, lightning bolt, magic missile
• 1/day each: animate objects, cone of cold, hold monster

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

Actions:

The sorcerer can make one melee attack with either its staff or paralyzing touch; or cast one of its available spells.

• Staff: Melee Weapon Attack: Attack:+4
  to hit, reach 5 ft., one target. Hit: 5(1d8 + 2)
  bludgeoning damage, or (1d10+2) bludgeoning damage if used with two hands.
• Paralyzing Touch: Melee Spell Attack: Attack:+8
  to hit, reach 5 ft., one creature. Hit: 14 (4d6+4)] necrotic damage. The target must succeed on a DC 16 Constitution saving throw or be paralyzed for 1 minute. The paralyzed target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. 

Legendary Actions:

The sorcerer can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. The sorcerer regains spent legendary actions at the start of its turn. 

• Cantrip: The sorcerer casts a cantrip.
• Move: The sorcerer moves up to its speed.
• Attack: The sorcerer makes one staff attack or uses its Paralyzing Touch.