Barrow Wight

Sunlight Sensitivity. While in sunlight, the wight has disadvantage on attack rolls, as well as on Wisdom (Perception) checks that rely on sight.

Baleful Shriek. As standard action the Barrow wight can let out a baleful shriek.  Those within 60ft must make a DC 16 Wisdom save or suffer 27 (6d8) psychic damage and become Frightened.  Those that save are immune to this effect until the end of the encounter.

Multiattack. The wight makes two falcata or spear attacks. It can use its Life Drain in place of one falcata or spear attack.

Life Drain. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit: 40(10d6 +4) necrotic damage. The target must succeed on a DC 16 Constitution saving throw or its hit point maximum is reduced by an amount equal to the damage taken. This reduction lasts until the target finishes a long rest. The target dies if this effect reduces its hit point maximum to 0.

A humanoid slain by this attack rises 24 hours later as a zombie under the wight's control, unless the humanoid is restored to life or its body is destroyed. The wight can have no more than twelve zombies under its control at one time.

Spear. Melee Weapon Attack: +7  to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) slashing damage, or 8 (1d10 + 3) slashing damage if used with two hands.

Falcata. Melee Weapon Attack: +7 to hit, reach 5ft., one target. Hit: 7 (1d8+3) slashing damage. 

Spellcasting.The barrow wight is a 10th-level spellcaster. Its spellcasting ability is Charisma(spell save DC 16, +7 to hit with spell attacks). The barrow wight has the following spells available:

Cantrips (at will):mage hand, ray of frost, chill touch

1st level (4 slots): thunderwave,fog cloud

2nd level (3 slots): invisibility, detect thoughts, mirror image

3rd level (3 slots): dispel magic