Arch Necromancer

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

Spellcasting. The arch necromancer is an 18th-level spellcaster. Its spellcasting ability is Intelligence (spell save DC 17, +9 to hit with spell attacks). The arch necromancer can cast disguise self and invisibility at will and has the following wizard spells prepared:

Cantrips (at will): chill touch, dancing lights, mage hand, mending

1st level (4 slots): false life,* mage armor,** ray of sickness*

2nd level (3 slots): blindness/deafness,* ray of enfeeblement,* web

3rd level (3 slots): animate dead,* bestow curse,* vampiric touch*

4th level (3 slots): blight,* dimension door, stoneskin**

5th level (2 slots): Bigby’s hand, cloudkill

6th level (1 slot): circle of death*

7th level (1 slot): teleport

8th level (1 slot): mind blank**

9th level (1 slot): time stop

*Necromancy spell of 1st level or higher

**The arch necromancer casts these spells on itself before combat.

Grim Harvest (1/Turn). When arch necromancer kills a creature that is neither a construct nor undead with a spell of 1st level or higher, the arch necromancer regains hit points equal to twice the spell’s level, or three times if it is a necromancy spell.

Withering Touch. Melee Spell Attack: +7 to hit, reach 5 ft., one creature. Hit: 5 (2d4) necrotic damage.