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Spider, Asteroid

Asteroid Spider CR 6

This pitted lump of rock is about the size of a wagon; stalks of stony flesh peel away from the body and the creature raises its head, mandibles clacking. Its black eyes seem to pierce right through you as it launches itself at your vessel, legs scrabbling upon the hull.

XP 2,400
CE Huge vermin
Init +2; Senses blindsense (vibration) 120 ft., darkvision ft.; Perception +13


HP 90
EAC 18, KAC 20
Fort +10, Ref +8, Will +5


Speed 30 ft., climb 20 ft.
Melee bite +16 (1d8+11 P plus acidic sputum)
Space 15 ft.; Reach 5 ft.
Offensive Abilities web (+13 ranged, DC 14, 6 HP)


Str +5, Dex +2, Con +3, Int —, Wis +0, Cha -4
Skills Athletics +18, Stealth +13 (+17 in webs)
Other Abilities no breath, starflight


Acidic Sputum (Ex)

The saliva of an asteroid spider is incredibly potent, capable of dissolving the hardest of metals. This acidic slaver ignores the first 5 points of acid resistance that any creature may possess.

If the asteroid spider makes a successful attack against a creature, that creature is exposed to the acid for 5 rounds, taking 2d4 damage per round unless neutralized.

If the asteroid spider attacks an object or vessel, spider’s bite ignores any hardness the object or vessel may have and does twice its normal damage.

Starflight (Su)

An asteroid spider can survive in the void of outer space. It flies through space at incredible speeds, making a trip within a single solar system normally takes 3d20 hours, while a trip beyond normally takes 3d20 days. However, asteroid spiders rarely leave the solar system that they’re born in, though they have been known to drift with passing meteor showers, comets, or other celestial bodies that drag rocks and other debris in their wakes.

Web (Ex)

Asteroid spiders can use webs to support themselves and up to one additional creature of the same size.

Asteroid spiders can throw a web as a standard action at creatures (up to Gargantuan size) that it can see within 50 feet. Creatures who are hit by the web gain the entangled condition, but entangled creature can escape as a standard action with a successful DC 14 Acrobatics or Strength check. Attempts to burst a web by those caught in it take a –4 penalty.


Environment any vacuum
Organization solitary, gang (2-4), or shower (11-20)

Asteroid spiders can create sheets of sticky webbing up to three times their size. They usually position these sheets to snare flying creatures but can also try to trap prey on the ground.

Approaching creatures must succeed on a DC 20 Perception check to notice a web; otherwise they stumble into it and become trapped as though by a successful web attack. Attempts to escape or burst the webbing gain a +5 bonus if the trapped creature has something to walk on or grab while pulling free. Each 5-foot-square section of web has 6 Hit Points and DR 5/—. Asteroid spiders can move across their own web at its climb speed and can pinpoint the location of any creature touching its web.

Asteroid spiders appear to be normal asteroids, drifting in a sort of torpor, floating in space until their extraordinary sense of hearing picks up the sound of a passing creature or vessel. Once a vessel draws close enough, asteroid spiders will swarm upon it and tear it asunder, devouring flesh, rock and metal alike. They will feed upon nearly anything, except for one another, strangely enough. When finished with their meal, they will curl back up into a ball and drift until the next unfortunate being encounters them. They often travel with passing meteor showers, or drift among asteroid fields.

Section 15: Copyright Notice

Starjammer Core Rulebook – Starfinder Edition © 2017 Open Gaming LLC; Authors: Peter K. Ullmann, Kirby Flake, John Starjammer – Starfinder Compatible Edition © 2017 d20pfsrd.com Publishing; Authors: Peter K. Ullmann, Kirby Flake, John Reyst, Troy Daniels, Michael McNeill, Manuel A. Oaxaca, Allen Snyder, Michael Ritter; Conversion to Starfinder by Tyler Beck, Kim Frandsen, Michael Ritter, Peter K. Ullmann.