Frost Worm

CharacteristicsCV6
StatScore%Speed50′, Burrow 20′, Swim 50′
STR26130HP81
CON20100Dmg Mod+4d6
SIZ55275AV14
INT630ClassMonster
ACU1260TypeMagical Beast (Cold)
DEX1050HorrorFirst Encounter (2/1d12+1)
SOC1050TreasureHarvestables
  • Attack: Bite 85% 2d8+6+4d6+1d8 (Cold); Slam 85% 2d8+6+4d6+1d8 (Cold)
  • Skills: Dodge 85%, Grapple 90%, Hide 75%, Listen 80%, Spot 80%, Stealth 70%, Athletics 90%, Survival 85%
  • Special: Cold, Trill, Breath Weapon, Death Throes, Darkvision 60′, Immunity to Cold, Vulnerability to Fire, Reach 25′
  • Weaknesses: Fire
  • Habitat: Arctic glaciers, frozen tundra, ice caves
  • Encounter: Solitary

SIZ Note

Gigantic (SIZ 55). Frost worms occupy a massive space and have a Reach of 25 feet with their Bite and Slam attacks.

Cold

A frost worm’s body radiates supernatural cold. Its Bite and Slam attacks inflict an additional 1d8 Cold damage.

Any creature striking a frost worm with an unarmed attack or natural weapon immediately suffers 1d8 Cold damage.

Trill

As a Free Action, the frost worm emits a haunting, resonating trill. All non-frost worms within 100 feet must succeed at a Difficult Stamina check or become Stunned for as long as the worm continues trilling and for 1d4 rounds afterward.

A stunned creature that is attacked or shaken violently may immediately attempt another Stamina check.

Once a creature successfully resists or recovers from a particular frost worm’s Trill, it is immune to that worm’s Trill for 24 hours.

A frost worm cannot use its Breath Weapon while Trilling.

Breath Weapon

Once per hour, a frost worm exhales a 30-foot cone of freezing mist.

Creatures within the cone suffer 10d6 Cold damage. A successful Agility (DEX) Save halves the damage.

Creatures currently stunned by Trill receive no Save against the Breath Weapon.

Death Throes

When slain, a frost worm explodes into a storm of frozen shards.

Every creature within 100 feet suffers 6d6 Cold damage and 8d6 Piercing damage.

A successful DEX Save halves both damage types.

Darkvision

A frost worm can see normally in darkness out to 60 feet, provided there is at least the faintest available light.

Immunity to Cold

A frost worm is completely immune to Cold damage and all magical or mundane effects based on extreme cold.

Vulnerability to Fire

Fire attacks inflict an additional +2d6 Fire damage against a frost worm after all other damage has been calculated.

Reagents and Remnants

Frost Worm Heart

The massive heart of a frost worm radiates supernatural cold for weeks after the creature’s death. Master alchemists prize it for brewing powerful frost oils, cold wards, and enchantments.

Value: 1,200 gp

Harvesting Difficulty: Very Difficult

Icefang Shards

The worm’s crystalline teeth and jaw fragments remain harder than steel after death. Smiths craft them into masterwork arrowheads, spear tips, and cold-forged blades.

Value: 400 gp

Harvesting Difficulty: Difficult

Frostscale Hide

The worm’s thick, frost-infused hide can be crafted into exceptional armor that protects against extreme cold and harsh environments.

Value: 900 gp

Harvesting Difficulty: Very Difficult