Rot Locust (5e Creature)

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Rot Locust[edit]

Gargantuan fiend, chaotic evil

Armor Class 15 (natural armour)
Hit Points 277 (15d20 + 120)
Speed 10 ft., fly 30 ft. (hover)

26 (+8) 9 (-1) 26 (+8) 9 (-1) 16 (+3) 9 (-1)

Saving Throws Str +14, Con +14
Proficiency Bonus +6
Damage Vulnerabilities radiant
Damage Resistances acid, cold, fire
Damage Immunities necrotic, poison; bludgeoning, piercing, and slashing from nonmagical attacks that aren't silvered
Condition Immunities charmed, frightened, poisoned
Senses blindsight 30 ft., darkvision 120 ft., passive Perception 13
Languages Abyssal, Infernal
Challenge 18 (20,000 XP)

Decay Aura. At the start of each of the locust's turns, each creature within 5 feet of it takes 10 (3d6) necrotic damage. Any nonmagical weapon that hits the locust corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If its penalty drops to -5, the weapon is destroyed. Nonmagical ammunition that hits the locust is destroyed after dealing damage.
The locust can eat through a 2-inch-thick area of any nonmagical material in 1 round.


Multiattack. The locust makes four attacks, only one of which may be with its bite.

Bite. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 30 (4d10 + 8) piercing damage, plus 28 (8d6) necrotic damage.

Slam. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 30 (4d10 + 8) bludgeoning damage, plus 28 (8d6) necrotic damage. In addition, nonmagical armour worn by the target is partly decayed and takes a permanent and cumulative -1 penalty to the AC it offers. The armour is destroyed if the penalty reduces its AC to 10.

Spawn of the Devourer (1/Day). The locust magically calls 2d4 swarms of insects. Each swarm has a 30 percent chance of being a variant swarm (if a swarm is a variant, the locust chooses what kind it is). The called creatures arrive in 1d4 rounds, acting as allies of the locust and obeying its spoken commands. The beasts remain for 1 hour, until the locust dies, or until the locust dismisses them as a bonus action.
Instead of insects, the locust may summon 2d4 swarms of rats, 1d6 giant rats or giant wasps, or one ooze with a challenge rating of 4 or lower.

Rot locusts are titanic insect-like fiends that are masters of rot and decay, and can summon ravenous beasts and oozes. Their touch can destroy almost everything. Wood rots into dust within moments, stone cracks and disintegrates, and metal rusts into uselessness. They have no feelings but hatred and a lust for destruction, and they aim to choke out and end all light and good in the multiverse. They especially hate religious places like shrines and temples, destroying any they discover before devouring their occupants.

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