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Rendalairn CR 25

XP 1,638,400
N Colossal construct (magical)
Init +12; Senses true seeing; Perception +46


HP 700 RP 8
EAC 42; KAC 44
Fort +23; Ref +23; Will +19
Defensive Abilities fast healing 25, juggernaut, juggernaut’s resolve;
Immunities cold, construct immunities, fire; SR 36


Speed 100 ft., burrow 50 ft., fly 100 ft. (Su, perfect)
Melee lash +41 (18d10+40 S; critical severe wound [DC 28])
Ranged disintegration ray +38 (13d10+25 A & So; critical corrode 4d6)
Space 30 ft.; Reach 60 ft.
Offensive Abilities demolisher, override, quake pulse, trample (18d10+40 B & S, DC 28)
Spell-Like Abilities (CL 25th)

Constanttrue seeing (self)


Str +15; Dex +12; Con —; Int +5; Wis +8; Cha +0
Skills Acrobatics +41 (+49 to fly), Mysticism +41, Piloting +41
Feats Mobility, Shot on the Run, Spring Attack
Languages truespeech
Other Abilities comm, life siphon, spaceflight, unliving


Comm (Ex)

A rendalairn can engage in wireless communications at system-wide range.

Demolisher (Ex)

A rendalairn’s attacks and abilities treat any object’s hardness as if it were 30 points lower than it is.

Disintegration Ray (Ex)

As a standard action, a rendalairn can fire its disintegration ray, which is a 120-foot line.

Damage from this ray has the force descriptor.

Juggernaut (Ex)

While a rendalairn takes a move action, or a full action to run or withdraw, any damage dealt to the rendalairn is halved.

Juggernaut’s Resolve (Ex)

When a rendalairn is reduced to 0 Hit Points, as a reaction before being destroyed, it can spend 4 Resolve Points to appear to be destroyed but regain 75 Hit Points at the start of its next turn (including those from fast healing), at which point it becomes active again. Casting wish or miracle before the start of the rendalairn’s next turn can prevent the creature from revivifying.

Life Siphon (Su)

While within 60 feet of a rendalairn, any creature reduced to 0 Hit Points dies on its turn unless it spends enough Resolve Points to stabilize. The rendalairn gains any Resolve Points spent in this way, as well as any Resolve Points a creature spends for staying in the fight while within 60 feet of the rendalairn.

Override (Su)

As a swift action, a rendalairn can dictate the actions of one Stunned”>stunned technological construct during its next turn. At the start of the target’s next turn, it ceases being Stunned”>stunned and takes the dictated actions, which cannot be obviously self-destructive.

Quake Pulse (Su)

Once every 3 rounds, as a standard action, a rendalairn can spend 1 Resolve Point to create a field of electromagnetic and low-frequency sonic energy that simulates seismic waves and disrupts technology. Creatures and objects within a 20-foot-radius spread of the rendalairn take 10d12+40 electricity and sonic damage (Fortitude DC 28 for half; objects carried or held by a creature that succeeds at this save also take half damage).

This damage has the force descriptor. A creature that fails the saving throw is knocked prone. If a technological construct fails the save, the construct is also Stunned”>stunned for 2 rounds even if it is normally immune to being Stunned”>stunned.

Unattended hybrid or technological objects in the area cease functioning for 2 rounds. Those worn or carried by a creature cease functioning only if the creature fails the saving throw, and then for only 1 round.


Environment any
Organization solitary

Spacefarers sometimes whisper about great cosmic menaces hurtling across the void. According to such reports, these monstrosities are giant metallic spheres traveling in normal space at speeds so fast they preclude engagement. The massive spheres are said to have the ability to sunder asteroids and crack planets, sprouting razor-edged lashes that whirl around them in a lethal flurry. Enough sightings have occurred that authorities are concerned.

The creature’s name, rendalairn, derives from a monster from an old spacefaring tale, but others refer to these creatures as “planet slayers.” There are two accounts of a rendalairn landing on a planet and starting a rampage that ended only when the construct was done destroying everything it could find, including sapient life. The two targeted worlds are home to the ruins of two different technologically advanced but extinct species. Some speculate that rendalairns choose technological societies and sites.

From observations gathered thus far, rendalairns seem to be specific in their attacks and ignore anything that doesn’t interfere with their intended devastation.

No report has yet indicated more than one rendalairn in any one place. They are thought to be solitary. A few scientists have asserted, given the evidence, that “the” rendalairn is unique. Disparities in description, such as coloration or composition, could be attributed to observational errors. Whatever the case, a rendalairn is spherical with a 30-foot diameter. When its lashes extend, the creature can reach up to 60 feet away. From this data, xenobiologists and engineers have speculated the creature weighs at least 50 tons.

No one is entirely sure when these massive constructs, if more than one exists, first appeared or who created them.

The sheer size and complexity of the creatures indicate that significant resources and expertise were invested in their creation. According to reports, a rendalairn has no logos or other identifying marks, besides luminous circular markings that change over time. The hypothesis that rendalairns are akin to tripods and, perhaps, manufactured by the same species is generally believed to be unlikely, due to the observed broadcasts, but has not been disproved. The mystery surrounding these creatures has prompted explorers and journalists to launch expeditions in search of the monstrosities. Most return without significant data. A few have failed to return at all.

Section 15: Copyright Notice

Starfinder Alien Archive 3 © 2019, Paizo Inc.; Authors: Saif Ansari, Kate Baker, John Compton, Adam Daigle, Katina Davis, Eleanor Ferron, Crystal Frasier, Leo Glass, Sasha Lindley Hall, Amanda Hamon, Thurston Hillman, James Jacobs, Jenny Jarzabski, Virginia Jordan, Jason Keeley, Natalie Kertzner, Luis Loza, Lyz Liddell, Ron Lundeen, Crystal Malarsky, Robert G. McCreary, Hilary Moon Murphy, Adrian Ng, Joe Pasini, Lacy Pellazar, Samantha Phelan, Jessica Redekop, Simone D. Sallé, Michael Sayre, Owen K.C. Stephens, James L. Sutter, Jason Tondro, Diego Valdez, and Linda Zayas-Palmer.