Aspect of Rage

Fiendish Sight. The Aspect of Rage's darkvision is not impeded by magical darkness.

Incorporeal Movement. The Aspect of Rage can move through other creatures and objects as if they were difficult terrain. It takes 5 (1d10) force damage if it ends its turn inside an object.

Multiattack. The Aspect of Rage makes two Black-flame Blade attacks.

Black-flame Blade. Melee Weapon Attack: +6 to hit, reach 5 ft., one target. Hit: 11 (2d6 + 3) slashing damage and 13 (4d6) necrotic damage.

Terrifying Gaze. Each creature within 60 feet of the Aspect of Rage that it chooses and can see it must succeed on a DC 15 Wisdom saving throw or be frightened for 1 minute. A frightened target can repeat the saving throw at the end of each of its turns, ending the frightened condition on itself on a success. If a target's saving throw is successful or the effect ends for it, the target is immune to its Terrifying Gaze for the next 24 hours.

Blightwind Breath (Recharge 5–6). The Aspect of Rage exhales a howling wind of decay in a 30-foot cone. Each creature in that area must make a DC 14 Charisma saving throw. On a failed save, the target takes 26 (4d12) necrotic damage and is cursed for 1 minute. While cursed in this way, the target takes an extra 6 (1d12) necrotic damage whenever the Aspect of Rage hits it with an attack. On a successful save, the target takes half as much damage and isn’t cursed.