Swarm of Frostflies

Armor Class 15

Hit Points 15 (8d12 + 88)

Speed 40 ft.

STR

8 (-1)

DEX

18 (+4)

CON

18 (+4)

INT

6 (-2)

WIS

12 (+1)

CHA

6 (-2)

Damage Resistances Cold, Poison

Condition Immunities , , , , , ,

Senses Passive Perception 10

Languages --

Challenge 1/2 (100 XP)

Proficiency Bonus +2

Traits

Death Scent. When a frostfly dies, it releases a scent that can be detected up to a mile away. Nearby swarms will quickly make their way to their fallen companion, in search of potential prey.

Actions

Stingers. Each creature in the swarms space must make a DC15 dexterity saving throw, taking 9 (2d8) piercing damage and 9 (2d8) cold damage on a success, or half as much on a failure.

Frigid Air. Any creature that starts it's turn in the swarms space must succeed on a DC 15 Constitution save or take 7 (2d6) cold damage.

Ball. The frostflies attempt to completely envelop a large or smaller creature, forming a tight ball around it. The target must succeed on a DC15 dexterity saving throw or become restrained by the swarm. A restrained creature is unable to breathe and will begin to suffocate. At the start of each of it's turns, a restrained creature must make a DC15 constitution saving throw, taking 28 (8d6) cold damage on a failure, or half as much on a success. A restrained creature can escape with a DC 15 strength check.

A swarm that is restraining a creature cannot use it's stinger or frigid air abilities.

Description

In everything but name, frostflies are much more like giant bees or wasps than they are like flies. They resemble honeybees, with blue and white stripes of fur across their body. The adults are up to two feet long, and incredibly aggressive.

Frostflies make their home in burrowed hives in the ice and snow and hunt in large swarms. They use their numbers and icy cold bodies to envelop their prey, creating a ball of frostflies that suffocates and freezes the creature to death.

Once they have killed their prey, the frostflies suck nutrients from the dead creatures body, turning it into Frostfly Sap, a bloody and sticky ooze that resembles the texture of honey, but is highly poisonous. This frostfly sap is sometimes used to lure unsuspecting creatures to the swarm.

When hunting, older frostflies scout ahead of the swarm alone, finding and attacking new prey. Generally these scouts will be defeated by the prey, a feature that is by design. When they die, frostflies release a scent that the swarm can detect from up to a mile away. Within two minutes, the swarm will descend upon the location, attacking and killing the prey.

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