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Ooze, Plasma (3pp)

Plasma Ooze CR 16

This amorphous blob of violet energy ripples like a globe of floating liquid. It periodically lashes out with tendrils of blue light.

XP 76,800
N Gargantuan ooze
Init +0; Senses blindsight (thermal) 60 ft., sightless; Perception +28
Aura magnetic pulse (30 ft., DC 22)


EAC 29; KAC 31
Fort +18, Ref +16, Will +12
Defensive Abilities split (slashing or sonic, 33 hp); DR 10/—; Immunities acid, bludgeoning damage, electricity, fire, ooze immunities, piercing damage; Resistances cold 30


Speed fly 30 ft. (Su, perfect)
Melee slam +30 (6d10+26 B, E, and F plus grab; critical burn 2d8)
Ranged plasma ray +27 (7d6+16 E and F; critical burn 4d6)
Space 20 ft.; Reach 20 ft.
Offensive Abilities engulf


Str +10, Dex +0, Con +7, Int —, Wis +5, Cha –2
Other Abilities no breath


Engulf (Ex)

A plasma ooze can simply engulf Gargantuan or smaller creatures in its path as a standard action. The ooze merely has to move over its opponents, affecting as many as it can cover. Opponents can make attacks of opportunity against the ooze, but if they do so they are not entitled to a saving throw. Those who do not attempt attacks of opportunity can attempt a DC 22 Reflex save to avoid being engulfed— on a success, they are pushed back or aside (opponent’s choice) as the ooze moves forward.

Engulfed creatures are subject to damage from the ooze’s slam attack, gain the pinned condition, are in danger of suffocating, and are trapped within its body until they are no longer pinned.

Magnetic Pulse (Su)

A plasma ooze is surrounded by an aura of magnetism that allows it to attract metallic objects and creatures. At the start of the ooze’s turn as a swift action, all metallic creatures, all creatures wearing metal armor, and all creatures wielding metal weapons within 30 feet must attempt a DC 22 Reflex save. If a metallic creature or a creature wearing metal armor fails the save, it is pulled 10 feet closer to the ooze and cannot move away from the ooze for 1 round. If this causes the creature to move into a square occupied by the plasma ooze, the ooze can attempt to engulf that creature as a reaction.

If a creature wielding a metal weapon fails the save, that weapon is disarmed and pulled 10 feet closer to the ooze. Unattended metal objects of size Large or smaller are automatically pulled toward a plasma ooze. This magnetism affects all metal objects.

Plasma Ray (Ex)

A plasma ooze’s plasma ray is a ranged attack against EAC with a maximum range of 60 feet and no range increment.

Split (Ex)

A plasma ooze splits into two identical copies of itself if subject to sonic or slashing damage. Each copy has half the original’s current Hit Points (rounded down). A plasma ooze reduced below the listed Hit Points cannot be further split and can be killed normally.


Environment any
Organization solitary

Massive and devastating, plasma oozes are mysterious, extraterrestrial beings made of superheated electromagnetic sludge. While their origin is not fully known, it is widely accepted that plasma oozes are not from this world. Some scholars believe they dwell in the sun, while others maintain they hail from the Plane of Fire. That plasma oozes have been encountered in both of these locations does little to help solve the debate.

A plasma ooze flies by somehow interacting with gravity and magnetic waves, drifting through the air in a manner similar to the way a jellyfish swims in water. This creature’s only real purpose is to consume, and it prefers to do so by drawing prey into its fiery, electrified core. Scholars find it curious that while a plasma ooze can only attract and repel metallic substances, the thing can only digest organic matter, and rather slowly at that.

Survivors of plasma ooze attacks are rare, but such victims describe the pain of being struck by one’s rays as like being pulled apart piece by piece.

Wounds left by a plasma ooze’s touch resemble hideously melted burn scars.

A plasma ooze is 20 feet in diameter and weighs 6,000 pounds.

Section 15: Copyright Notice

Alien Bestiary (Starfinder) © 2018, Legendary Games; Lead Designer: Jason Nelson. Authors: Anthony Adam, Kate Baker, John Bennet, Eytan Bernstein, Robert Brookes, Russ Brown, Duan Byrd, Jeff Dahl, Robyn Fields, Joel Flank, Matt Goodall, Robert J. Grady, Jim Groves, Steven T. Helt, Thurston Hillman, Tim Hitchcock, Nick Hite, Daniel Hunt, Mike Kimmel Marshall, Isabelle Lee, Jeff Lee, Lyz Liddell, Jason Nelson, Richard Pett, Tom Phillips, Alistair J. Rigg, Alex Riggs, Wendall Roy, Mike Shel, Neil Spicer, Todd Stewart, Russ Taylor, Rachel Ventura, Mike Welham, George Loki Williams, Scott Young.