Xotanispawn
CREATURE 17Xotanispawn are monstrous versions of scavenging beetle larvae that have been corrupted and mutated by feeding on the remains of Xotani the Firebleeder, a slain Spawn of Rovagug buried beneath Pale Mountain in Katapesh. These creatures look vaguely like the minute insects they once were, with a sclerotized head and chitinous body plates, six legs, and numerous dorsal spines lining the joints and edges of each segment. However, by feeding on the unholy remains of Xotani, the spawn have manifested many of the traits of the infamous Firebleeder, most notably a blisteringly hot internal temperature and powerful fire attacks—to say nothing of their monstrous size.
Internal heat radiates from every surface of a Xotanispawn, even from its mouth. Any contact with a Xotanispawn results in burns and the risk of catching on fire. Thankfully, Xotanispawn have also inherited Xotani's weaknesses to cold and sunlight. They are rarely encountered on the surface during the day, opting to emerge from their subterranean lairs only at night.
Tremorsense allows a monster to feel the vibrations through a solid surface caused by movement. It is an imprecise sense with a limited range (listed in the ability). Tremorsense functions only if the monster is on the same surface as the subject, and only if the subject is moving along (or burrowing through) the surface.
When a Xotanispawn dies, it explodes, dealing 15d8 fire damage to creatures in a 30-foot emanation (DC 39 basic Reflex save).
60 feet. DC 36 Will
A creature that first enters the area must attempt a Will save.
Regardless of the result of the saving throw, the creature is temporarily immune to this monster's Frightful Presence for 1 minute.
Critical Success The creature is unaffected by the presence.
Success The creature is Frightened 1.
Failure The creature is Frightened 2.
Critical Failure The creature is Frightened 4.
The Xotanispawn sprays a 60-foot cone of magma that deals 10d10 fire plus 2d6 persistent fire damage to all creatures in the area (DC 39 basic Reflex save).
The Xotanispawn can't use its Breath Weapon again for 1d4 rounds.
When the Xotanispawn critically hits, its body surges with heat, increasing the damage of its Internal Furnace to 10d8 until the start of its next turn.
Effect: Heat Surge
The monster can instead use Grab and choose one creature it's grabbing or restraining with an appendage that has Grab to automatically extend that condition to the end of the monster's next turn.