Frost Mite Swarm

This fog cloud unnaturally chills the air as it approaches, revealing a swarm of tiny insects.

Frost Mite Swarm CR 10

XP 9,600
NE Fine Magical Beast (cold, swarm)
Init +7; Senses darkvision 60 ft.; Perception +14


AC 21, touch 21, flat-footed 18 (+3 Dex, +8 size)
hp 97 (13d10+26), Regeneration 5 (fire)
Fort +9, Ref +11, Will +7
Defensive Abilities swarm traits Immune weapon damage, cold Weakness swarm traits, Vulnerability to fire


Speed fly 20 ft. (good)
Melee swarm (3d6 cold plus disease and distraction)
Space 10 ft.; Reach 0 ft.
Special Attacks disease, distraction (DC 17)


Str 1, Dex 17, Con 13, Int 3, Wis 12, Cha 10
Base Atk +13; CMB -; CMD
Feats Ability Focus (disease), Hover, Improved Initiative, Iron Will, Skill Focus (Fly), Toughness, Wingover
Skills Fly +14, Perception +14, Stealth +19 Racial Modifiers +8 Fly
SQ swarm traits


Disease (Ex)

Any creature that takes damage from the frost mite’s swarm attack must succeed a DC 19 Fortitude save or contract frost scars disease. The save DC is Constitution-based.

Frost Scars: Disease-injury; saveFort DC 19 onset 1 day; frequency 1/day effect 1d2Str plus 1d2Dex damage; cure 2 consecutive saves.


Environment temperate forest
Organization solitary, fog (2-4 swarms), or storm (5-7 swarms)
Treasure none

Frost mites are miniscule, flying insects that travel in tight groups. As they move, the air around them freezes, disguising the horde of unnatural monsters in a natural fog. The mass of insects seeks out warm bodies to feed upon, eager to slay their victim and convert its body into an icy host. Unlike other insects, frost mites lay their eggs in trees or in small holes in the ground before the spring thaw. The eggs hatch during the fall months and the larvae turn into these flying mites by the first snow of the season. Winter’s peak is when these creatures are in full force. Animals and travelers have been found frozen to death anywhere from wintery forests to cozy barns. Their deaths have been credited to these tiny, wintery pests.

Frost mites infect their victims with a magical disease known as frost scars. Victims of the disease suffer intense cold as their flesh continues to freeze and slough off in grotesque ice crystals. Those who survive a frost mite swarm attack and the ensuing disease are commonly marked by horrible deep scars with a blue tint. These scarred survivors are considered lucky compared to those that contract the disease and never recover. Tales of unfortunate villagers growing weak, sluggish and clutching a blanket to stay warm are told to children to keep them away from the depths of forests. These tales are also heeded by adults.

Section 15: Copyright Notice

Book of Beasts: Monsters of the River Nations, copyright 2010 Jon Brazer Enterprises; Author Steven Helt.

scroll to top