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Anathema Locust Swarm

Family: Swarm

Medium swarm of Tiny beasts, unaligned

Armor Class 12 (natural armor)
Hit Points 36 (8d8)
Speed 20 ft., climb 20 ft., fly 40 ft.

3 (-4) 12 (+1) 10 (+0) 1 (-5) 8 (-1) 1 (-5)

Damage Resistances bludgeoning, piercing, slashing
Condition Immunities charmed, frightened, grappled, paralyzed, petrified, prone, restrained, stunned
Senses blindsight 10 ft., passive Perception 9
Challenge 1 (200 XP)


  • Swarm. The swarm can occupy another creature’s space and vice versa, and the swarm can move through any opening large enough for a Tiny insect. The swarm can’t regain hit points or gain temporary hit points.


  • Bite. Melee Weapon Attack: +3 to hit, reach 0 ft., one target in the swarm’s space. Hit: 10 (4d4) piercing and 3 (1d6) acid damage or 5 (2d4) piercing damage and 2 (1d4) acid damage if the swarm has half its hit points or fewer.
  • Defensive Retreat. The swarm can move on its turn while the locusts spray their acidic spittle, leaving behind a cloud of acid droplets that lasts until the start of the swarm’s next turn. Any creature that begins its turn in the cloud takes 14 (4d6) acid damage or 7 (2d6) acid damage if the swarm has half its hit points or fewer.


Dark red with patterns of black splotches on its carapace, an anathema locust is about 3 inches in length. Its bite secretes an acidic spittle that melts organic materials. A single anathema locust is a dangerous pest, but these insects never show up alone. In groups of hundreds or thousands, these creatures slumber beneath the dust of the Wastes, awaiting the spawning storms and the mad spring that follows. Then the locusts awaken from hibernation and tunnel to the surface to feed on the abundant plant life. Most inhabitants of the Western Wastes loathe these creatures, which can strip the bounty provided in the season to nothing.

Dangerous Pest. Countries that border the Western Wastes keep close watch for these vermin during the mad spring. While they remain in the Wastes and feed on the wild growth there, they are tolerated. However, should swarms seek to fly into Allain or other border realms, defenders are quick to destroy them. Allowing anathema locusts to gain a foothold outside the Wastes could lead to famine as the invasive species has no natural predators outside of its regular territory.

Hunters and Hunted. While swarms of anathema locusts feed mainly on plant life, they will not hesitate to attack and devour creatures that disturb their feeding or happen to be in a chosen feeding ground when they descend. The denizens of the Wastes are a frugal and hardy people however and will take their food wherever they can find it. Some hunt swarms of anathema locusts for food as the insects provide a rich source of protein.

Finely woven nets of silk vine (see “Items of the Mad Spring” below) are used to ensnare a swarm, which is then quickly drowned, smothered, or killed by some other means.

Section 15: Copyright Notice

Warlock Grimoire 3. Authors: Lou Anders, Wolfgang Baur, Celeste Conowitch, Basheer Ghouse, Richard Green, Gabriel Hicks, Victoria Jaczko, Jeff Lee, Jerry LeNeave, JB Little, Christopher Lockey, Sarah Madsen, Ben McFarland, Jonathan Miley, Kelly Pawlik, Richard Pett, Jon Sawatsky, Mike Shea, Brian Suskind, Prakash Upadhyayula, Ashley Warren, Mike Welham, and Steve Winter. © 2022 Open Design LLC.

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