Baalzebul, Lord of the Seventh

Aura of Weakness. Each creature, other than a devil, that starts its turn within 50 feet of Baalzebul must succeed on a DC 26 Constitution saving throw or deal only half damage with attacks using strength until the start of its next turn. A creature that passes this saving throw is immune to Baalzebul’s Aura of Weakness for 24 hours.

Hellish Weapons. Baalzebul’s weapon attacks are magical and deal an extra 36 (8d8) necrotic damage on a hit (included in the attacks).

Immutable Form. Baalzebul is immune to any spell or effect that would alter his form. Only a wish spell can remove this trait.

Innate Spellcasting. Baalzebul’s innate spellcasting ability is Charisma (spell save DC 25). He can innately cast the following spells, requiring no material components:

At will: detect magic, giant insect, insect plague, invisibility(self only), major image, thaumaturgy, web

1/day each: glibness,  symbol(insanity only)

Legendary Resistance (3/Day). If Baalzebul fails a saving throw, he can choose to succeed instead.

Lord of the Flies. An insect attempting to attack Baalzebul treats him as if he is under the effect of a sanctuary spell (save DC 25).

Lord of the Lies. Baalzebul adds triple his proficiency bonus to Charisma (Deception) checks.

Magic Resistance. Baalzebul has advantage on saving throws against spells and other magical effects.

Path of Baalzebul. As a bonus action on his turn, Baalzebul can choose one ally he can see within 30 feet of himself. Until the start of Baalzebul's next turn, he gains advantage on all ability checks and attack rolls, while the chosen ally suffers disadvantage on all ability checks, attack rolls, and saving throws.

Regeneration. Baalzebul regains 20 hit points at the start of his turn. If he takes radiant damage, this trait doesn't function at the start of his next turn. Baalzebul dies only if he starts his turn with 0 hit points and doesn't regenerate.

Multiattack. Baalzebul makes a slam attack and uses his Withering Touch.

Slam. Melee Weapon Attack: +19 to hit, reach 10 ft., one target. Hit: 26 (3d10 + 10) piercing damage plus 36 (8d8) necrotic damage.

Withering Touch. Melee Spell Attack: +17 to hit, reach 10 ft., one target. Hit: 36 (8d8) necrotic damage and the target must succeed on a DC 25 Constitution saving throw or have one limb of Baalzebul’s choice shrivel and become useless until healed by magic such as regenerate.

Insect Gorge (Recharge 5-6). Baalzebul disgorges a swarm of stinging insects in a 60 foot cone. All creatures within that cone must make a DC 27 Dexterity saving throw, taking 70 (20d6) piercing damage on a failed save or half as much on a successful one. The insects then form a cloud in a 25-foot radius around Baalzebul until this ability recharges, at which point he swallows them again. The area inside the cloud is heavily obscured to creatures without truesight and any living creature (other than Baalzebul) takes 20 (10d6) piercing damage if it starts its turn in the cloud. The insects in this cloud use the statistics of a giant wasp if Baalzebul casts giant insect on them.

Teleport. Baalzebul magically teleports, along with any equipment he is wearing and carrying, up to 120 feet to an unoccupied space he can see.

Baalzebul can take 3 legendary actions, choosing from the options below. Only one legendary action can be used at a time and only at the end of another creature's turn. Baalzebul regains spent legendary actions at the start of his turn.

Wither. Baalzebul uses his Withering Touch.

Teleport. Baalzebul uses his Teleport action.

Recharge (Costs 3 Actions). Baalzebul recharges his Insect Gorge.