Nailhead, Queen (CR 8)

This enormous horned creature’s carapace shimmers as it scuttles forward on six legs and attacks.

Nailhead, Queen (CR 8)

XP 4,800
N Huge vermin
Init -1; Senses darkvision 60 ft.; Perception +0


AC 21, touch 7, flat-footed 21 (-1 Dex, +14 natural, -2 size)
hp 102 (12d8+48)
Fort +12, Ref +3, Will +4
DR 10/adamantine


Speed 30 ft., burrow 10 ft.
Melee head butt +15 (4d6+12)
Space 15 ft.; Reach 10 ft.
Special Attacks digestive acid, trample (4d6+12, DC 24)


Str 26, Dex 8, Con 18, Int —, Wis 10, Cha 9
Base Atk +9; CMB +19; CMD 28 (36 vs. trip)
Skills Climb +16
SQ composite carapace, unwavering

Special Abilities

Burrow (10 feet) You have a Burrow speed.
Composite Carapace (Ex) The nailhead queen’s carapace is made out of a strange mixture of metals. Its natural weapons count as silver, cold iron, and adamantine for the purpose of overcoming damage reduction.
Damage Reduction (10/adamantine) You have Damage Reduction against all except Adamantine attacks.
Darkvision (60 feet) You can see in the dark (black and white only).
Digestive Acid (3/day, DC 20) (Ex) As a standard action every 1d4+1 rounds, a nailhead queen can spew forth a 30 foot cone of its highly corrosive digestive acid. Creatures struck by this attack take no damage, but the acid deals 3d6 points of acid damage per round to any metallic armor worn by the target. A successful Reflex saving throw avoids the effect entirely.

If desired, the target can use a full-round action to wipe off the acid to prevent additional damage. If the acid reduces the armour’s hit points to zero, it disintegrates into a foul smelling ooze. This ooze serves as a food source for any nearby nailhead, nourishing them and allowing them to build upon its carapace.
Unwavering (Ex) A nailhead is both thick skinned and thick skulled, granting it full immunity to nonlethal damage.


Environment underground
Organization solitary or hive (10–100 nailheads and 1 queen)
Treasure incidental

Nailheads are small anthropods that reside in mines and other caves that are rich in ore. In their natural form, nailheads have soft limbless bodies, resembling oversized silk worms, and pose no threat to adventurers. However, if allowed near any sort of metal, nailheads are capable of ingesting the material and excreting it as metallic silk. The silk has the same qualities of whatever metal was ingested and can be spun into webs and other constructs. Nailheads specifically use this material to craft durable exoskeletons for themselves, complete with their eponymous large spiked horns. Nailheads become aggressive and territorial when armoured in such a manner and can pose a major threat to unprepared adventurers – especially if they’ve been feasting on particularly remarkable ore.

Queens are the enormous matriarchs of nailhead colonies, and possess far greater strength then those serving below them. Fifteen feet tall and encased in a carapace hewn of gold, silver, and iron, a queen spends most of her time caring for larval nailheads and protecting its territory from outsiders.fillermonster