Magma Ooze CR 7
This seething mass of bubbling molten rock churns and moves of its own hungry accord.
DEFENSE HP 108
EAC 19; KAC 21
Fort +11, Ref +7, Will +4
Defensive Abilities split (cold and slashing, 10 hp); Immunities fire, ooze immunities
Weaknesses vulnerability to cold, vulnerability to water
Speed 10 ft., climb 10 ft.
Melee slam +17 (2d6+12 B & F plus grab; critical 2d6 burn)
Space 10 ft.; Reach 5 ft.
Offensive Abilities constrict (2d6+11 B & F)
Lava Body (Ex)
A magma ooze is formed of molten rock. Whenever a creature strikes a magma ooze with a weapon, that weapon takes 2d6+7 fire damage, unless the attacker makes a DC 15 Fortitude save. Damage caused to weapons in this manner is not halved, but hardness does help prevent some of the damage dealt.
Vulnerability to Water (Ex)
A significant amount of water, such as the contents of a large bucket, or a blow from a water elemental, that strikes a magma ooze forces the creature to make a DC 22 Fortitude save to avoid being staggered for 2d4 rounds. A magma ooze immersed in water must make a DC 22 Fortitude save each round (this DC increases by +1 each subsequent round) or become petrified (as if affected by flesh to stone), reverting once the water is gone.
Environment any volcano or underground
Magma oozes are living pools of molten rock. They roam the borders of the Plane of Earth and Plane of Fire, and on the Material Plane they sometimes arise spontaneously from strange magic, usually in the vicinity of volcanoes. Magma oozes avoid water, and if forced into enough of it, they become encased in a cooled stony shell, unharmed but immobilized, waiting indefinitely until the water retreats. A typical magma ooze grows to 10 feet across and is about 6 inches thick.
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.