Unarmored Defence. While Zacktor is not wearing armour or shields his AC includes his Wisdom modifier.

Black Flames. Any fire produced by Zacktor is as black as coal and remains that colour until extinguished.

Spellcasting. Zacktor is a 3rd-level spellcaster. Its spellcasting ability is Wisdom (spell save DC 11, +3 to hit with spell attacks). The [monster name] has following Monk spells prepared:

Cantrips (at will): Produce Flame, light

1st level (4 slots): Absorb Elements, Burning Hands

2rd level (2 slots): Flame Blade, Flaming Sphere

Multiattack. Zacktor can attack twice with his unarmed strikes or once with an unarmed strike and flaming fist or twice with flaming fists.

Unarmed Strike. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) bludgeoning damage. 

Flaming Fist Ranged Attack. Flaming fist Weapon Attack: +3 to hit, range 15/30 ft., one target. Hit: 4 (1d6 + 1) Fire damage.

Do a little combo with a bonus unarmed strike or move with a dash/disengage 3 times per short rest.

Block. adds 2 AC to ranged attacks. Can only be used twice per long rest.