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Mucilaginous Cloud

Source Starfinder #7: The Reach of Empire pg. 58

Mucilaginous Cloud CR 5

XP 1,600
N Huge ooze
Init +3; Senses blindsight (vibration) 90 ft., sightless; Perception +11


HP 65
EAC 19; KAC 15
Fort +6; Ref +2; Will +6
Immunities acid, ooze immunities; Resistances cold 5


Speed fly 30 ft. (Ex, perfect)
Melee tendril +12 (1d4+10 A & B plus swallow whole)
Offensive Abilities distraction (DC 15), swallow whole (1d4+10 A, EAC 19, KAC 11, 16 HP)


STR +5; DEX +3; CON +2; INT —; WIS +0; CHA -2
Skills Acrobatics +3 (+11 to fly), Stealth +3 (+13 in fog, smoke, or clouds)
Other Abilities buoyant, camouflaging haze, compression, mindless


Environment any sky
Organization solitary, pair, or pack (3–5)

Special Abilities

Buoyant (Ex) A mucilaginous cloud is naturally buoyant. It can hover as part of any action it takes without needing to roll a check. If unable to take actions, it naturally floats in the air, moving with air currents.

Camouflaging Haze (Ex) Mucilaginous clouds are translucent, but their skin interacts with the environment to produce a camouflaging haze that matches the color of the surrounding atmosphere. While camouflaged, a mucilaginous cloud appears to be merely a patch of fog or a cloud. This camouflage provides a +10 bonus to Stealth checks while in fog, smoke, or clouds, and it allows a mucilaginous cloud to attempt a Stealth check even when lacking cover or concealment. Once a creature succeeds at a Perception check to realize a mucilaginous cloud is more than it appears, the ooze loses the benefit of this camouflage against that creature until the creature can no longer see the ooze. Once a mucilaginous cloud has swallowed a victim whole, that ooze can’t use its camouflaging haze until the victim is digested (in 2 to 6 hours) or escapes.


Most explorers refer to the predatory flying oozes found on a wide array of planets as mucilaginous clouds, although those oozes are not identical. Scholars theorize they have a common ancestor: an airborne creature that evolved billions of years ago and, as part of its life cycle, sprayed spores from the upper atmosphere of its world into space.

Camouflaging vapor normally hides a mucilaginous cloud’s true form; unconcealed, they are membranes of churning protoplasm, sometimes still visibly containing a victim’s undigested remains. The digestive chemicals secreted by a mucilaginous cloud’s outer layer nauseate victims on contact, leaving them vulnerable to being sucked in and slowly consumed. A mucilaginous cloud is nearly 15 feet wide and 15 feet long, but as its body is mostly full of pockets of acidic gas, it weighs only 100 pounds. Furthermore, a mucilaginous cloud can compress itself to greater density or expand itself so as to float even when unconscious. Its amorphous form also allows it to extend long tendrils, which it can use to attack.