Weakening Aura. Any creature hostile to the demon that starts its turn within 5 feet of the demon must make a DC 18 Constitution saving throw. On a failed save, the creature gains disadvantage on all attack rolls until the start of its next turn. If a creature's saving throw is successful, the creature is immune to the demon's Weakening Aura for the next 5 minutes.

Innate Spellcasting. The demon's spellcasting ability is Wisdom (spell save DC 18). The demon can innately cast the following spells, requiring no material components:

At will: produce flame

1/day each: heat metal

Multiattack. The demon attacks twice when rending.

Rend. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 13 (5d4 + 2) piercing damage. The target must succeed on a DC 16 Constitution saving throw or become poisoned until the demon has died.