Crystalline Wight

Psionic Spellcasting. The wight’s innate spellcasting ability is Wisdom (spell save DC 18). It can innately cast the following spells, requiring no verbal or material components:

At will: detect magic, disguise self, dissonant whispers

1/day each: fear, hold person, misty step, shadow blade.

Multiattack. The wight attacks twice with Crystal Bolt.

Crystal Bolt. Ranged Spell Attack: +8 to hit, range 120 ft., one target. Hit: 16 (2d8 + 8) piercing damage.

Crystal Blade. Melee Weapon Attack: +4 to hit, reach 5 ft., one creature. Hit: 9 (2d6 + 2) piercing damage. The target must succeed on a DC 18 wisdom saving throw or take 6 (3d6) psychic damage per round till they make a successful wisdom save or medicine check to remove the crystal fragments embedded in them when hit. 

A creature slain by this attack rises 24 hours later as a [monster]Crystalline Husk[monster] under the wight’s control, unless the creature is restored to life or its body is destroyed. The wight can have no more than twelve [monster]Crystalline Husk;Crystalline Husks[monster] under its control at one time.