Amethyst Knight

Psionics. Charges: 4. Recharge: Long Rest. DC: 14

(Psionic) Distance: As an action, choose any number of creatures (maximum is the number of psionic charges remaining) within 30 feet. Each creature must succeed a Strength saving throw or be pushed back 30 feet in a straight line. 

(Psionic) Flay: As a bonus action, the Amethyst knight blasts pure psionic energy form its eyes, frying the brains of all creatures in a 60ft cone. Each creature in that area must make an Intelligence saving throw. On a failed save, they take 1d6 damage per 2 psionic charges spent, or half as much on a successful save.

Spellcasting.  Amethyst knights are 5th-level spellcasters. Their spellcasting ability is Intelligence (spell save DC 14, +6 to hit with spell attacks). They can cast the following spells at will without material components. 

1st level (4 slots): command (gravel only), healing word, wrathful smite. 
2nd level (2 slots): branding smite

Multiattack. The Amethyst Knight makes 2 greatsword attacks

Greatsword. Melee Weapon Attack: +5 to hit, reach 5 ft., 1 target. Hit: 9 (2d6 + 3) slashing damage. 

Javelin. Ranged Weapon Attack: +5 to hit, range 30/120 ft., 1 target. Hit: 6 (1d6 + 3) piercing damage.