Source Starfinder #7: The Reach of Empire pg. 61Thermatrod CR 3XP 800
CN Large magical beast (fire)
Init +1; Senses blindsight (vibration) 60 ft., darkvision 60 ft., low-light vision, sightless; Perception +8
Aura melting aura (5 feet)DefenseHP 39
EAC 14; KAC 16
Fort +7; Ref +5; Will +2
Immunities fire
Weaknesses vulnerable to coldOffenseSpeed 30 ft., burrow 30 ft.
Melee slam +10 (1d6+7 F)
Space 10 ft.; Reach 10 ft.
Offensive Abilities slag barrageStatisticsSTR +4; DEX +1; CON +2; INT +0; WIS +0; CHA +0
Skills Acrobatics +7, Athletics +12, Intimidate +7
Other Abilities earth glideEcologyEnvironment any warm mountains
Organization solitary or pairSpecial AbilitiesMelting Aura (Ex) A creature that begins its turn within 5 feet of a thermatrod takes 1d4 fire damage from the creature’s intense internal temperature.
Slag Barrage (Ex) As a full action, a thermatrod can spray a portion of its core at a grid intersection within 60 feet. All creatures within 10 feet of this intersection take 2d6 fire damage and gain the staggered condition as the spray of molten stone and metal hardens. A target can attempt a DC 14 Reflex save to halve the damage and negate the staggered condition. Otherwise, the staggered condition lasts for 1 minute unless the target or an adjacent creature uses a full action to peel off enough rock and stone for the target to be able to move.DescriptionMystics believe that the planets on which thermatrods are found have connections to the Elemental Planes of Earth and Fire. But however much the creatures may resemble elemental inhabitants of those planes, they are simply silicon-based beasts that thrive in extreme heat.
A thermatrod uses a knuckle-walking quadrupedal gait resembling that of a gorilla, but it can also stand on its back legs or use its arms to climb. Its torso is a mix of several types of molten stone and metal, allowing the thermatrod to digest heavy minerals inedible to most living creatures; Pact Worlds scientists don’t fully understand how the thermatrod’s silicon core maintains this intense heat. A thermatrod’s cooler backside is made of several interlocking raised hexagonal plates, which resemble basalt columns. Due to this makeup, thermatrods can weigh over a dozen tons.
Like that of most silicon-based life, the thermatrod’s chemical makeup didn’t allow it to evolve sensory organs, meaning it is both blind and deaf. However, the fine crystalline matrices in the creature’s head allow it to sense both heat and tremors. While its head is absent eyes and a nose, it does have a dripping maw, which the beast uses to eat loose stones it finds on the ground.
A typical thermatrod is 10 feet tall and weighs over 1 ton.
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ThermatrodSource Alien Archive 4 pg. 124
Despite being large, bipedal creatures, thermatrods use a knuckle-walking quadrupedal gait resembling a gorilla’s stride, though they occasionally stand on their back legs or use their arms to climb. A mix of several types of molten stone and metal found on their native planet make up thermatrods’ torsos, allowing them to digest heavy minerals inedible to most living creatures. Several interlocking raised hexagonal plates resembling basalt columns make up their cooler backside. Due to this composition, a typical thermatrod stands 10 feet tall and weighs several tons.
Many mystics believe that the worlds thermatrods inhabit must also have connections to the Elemental Planes of Earth and Fire—thin spots where the energies of those places bleed through into the Material Plane. After much study by dedicated xenobiologists, however, current wisdom maintains that though the creatures might strongly resemble the elemental inhabitants of those planes, they’re simply silicon-based beasts that thrive in extreme heat.
Like some other silicon-based life-forms, thermatrods’ chemical evolution didn’t result in traditional sensory organs such as eyes and ears. However, fine crystalline matrices within the stone of a thermatrod’s head allow it to sense even very fine tremors. The one typical sense organ it does have is its dripping maw, into which the beast crams loose stones for sustenance.
Pact Worlds scientists don’t yet fully understand how a thermatrod’s silicon core maintains its intense heat. Some believe that, like a planet, it must contain radioactive elements that decay to generate this energy. The fact that thermatrods appear more prevalent in warm areas that contain a larger percentage of naturally radioactive metals supports this theory, but some question why the creatures themselves aren’t radioactive. Other xenobiologists posit that thermatrods might contain fragments of Hellfire that never cease burning, but no one has proven this hypothesis.
Thermatrods’ method of reproduction adds to the mystery of their biology. They travel to a hot geographical location, such as volcano or a thermal spring, to undergo a kind of mitosis. A thermatrod’s torso cracks open before spilling forth a portion of its molten core onto the ground. The exterior of this blob cools into the general shape of another thermatrod, which instinctively seeks out stone and metals to consume. If the surrounding area has an appropriate amount of sustenance, the newborn thermatrod grows to standard size within hours. Otherwise, the creature dies, leaving nothing behind but a strangely shaped rock, for which some collectors pay handsomely. In either case, the original thermatrod moves on long before the new one finishes developing.
On rare occasions, a severe disturbance in a planet’s magnetic field can cause two thermatrods in the same place to completely expel their cores, forming a single new mass. This pile hardens into a huge, four-armed thermatrod that devours any and all nearby metal-laced stones and crystals. Known as a thermatrod caldera, this creature constantly seeks out more materials to consume, its burning appetite for ore almost impossible to sate. Unfortunate mining operations that happen to be in the same area as a caldera’s feeding grounds usually get torn apart by the ravenous beast, often killing any workers caught in the way, as well as causing hundreds of thousands of credits worth in damages and lost profits. As such, mining companies that operate in areas of known thermatrod activity often spend extra resources on defensive barriers and equip their security with cryo weapons. Otherwise, these corporations must rely on freelancers to travel to an overrun mine and deal with any rampaging behemoths, which can often run up an even steeper bill.Aliens in "Thermatrod" FamilySource Alien Archive 4 pg. 124Thermatrod CR 3 XP 800
CN Large magical beast (fire)
Init +1; Senses blindsight (vibration) 60 ft., sightless;; Perception +8
Aura melting aura (5 ft., 1d4 F)DefenseHP 39
EAC 14; KAC 16
Fort +7; Ref +7; Will +2
Immunities fire
Weaknesses vulnerable to coldOffenseSpeed 30 ft., burrow 30 ft.
Melee slam +12 (1d6+7 F)
Offensive Abilities slag barrage (2d6 F, DC 12)StatisticsSTR +4; DEX +1; CON +2; INT +0; WIS +0; CHA +0
Skills Acrobatics +8, Athletics +13, Intimidate +8
Other Abilities deaf, earth glideEcologyEnvironment any warm mountains
Organization solitary or pairSpecial AbilitiesDeaf (Ex) Thermatrods can’t attempt Perception checks to listen and are immune to effects that rely on hearing to function.
Melting Aura (Ex) A creature that begins its turn within 5 feet of a thermatrod takes 1d4 fire damage from the creature’s intense internal temperature.
Slag Barrage (Ex) As a full action, a thermatrod can spray part of its core at a grid intersection within 60 feet. Each creature within 10 feet of this intersection takes 2d6 fire damage and gains the staggered condition as the molten material hardens. An affected creature can attempt a DC 12 Reflex save to halve the damage and negate the staggered condition. Otherwise, the staggered condition lasts for 1 minute or until the target or an adjacent creature uses a full action to free the target.
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