Void Knight

Fear of Fire. If the void knight takes fire damage, it has disadvantage on attack rolls and ability checks until the end of its next turn.

Magic Resistance. The void knight has advantage on saving throws against spells and other magical effects.

Multiattack. The void knight makes two void axe attacks.

Void Axe. Melee Weapon Attack: +8 to hit, reach 10 ft., one target. Hit: 12 (1d12 + 5) slashing damage.

Frightful Presence. Each creature of the void knight's choice that is within 30 feet of the void knight and aware of it must succeed on a DC 12 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the void knight's Frightful Presence for the next 24 hours.