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Roiling Oil

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This viscous heap slides like an inky spill. It's the color of a starless night sky, and a thick odor permeates the air around it.

Roiling Oil CR 6

XP 2,400
N Large ooze
Init –5; Senses blindsight 60 ft.; Perception –5


AC 4, touch 4, flat-footed 4 (–5 Dex, –1 size)
hp 103 (9d8+63)
Fort +10, Ref –2, Will –2
DR 10/slashing; Immune electricity, fire, ooze traits


Speed 10 ft., climb 10 ft.
Melee slam +15 (3d6+15 plus nauseating film)
Space 10 ft.; Reach 10 ft.
Special Attacks nauseating film, rolling inferno


Str 30, Dex 1, Con 24, Int —, Wis 1, Cha 1
Base Atk +6; CMB +17; CMD 22 (can't be tripped)
Skills Climb +18


Nauseating Film (Su)

When a roiling oil makes a successful slam attack, it coats a portion of its target in a clinging, reeking film. Creatures affected must succeed at a DC 19 Fortitude save or be nauseated for 1d4+1 rounds. On a successful save, they are instead nauseated for 1 round.

This is a poison effect. Another creature can take a full-round action to scrape off some of the film and reduce the remaining duration of the nauseated condition by 1 round.

Rolling Inferno (Su)

Roiling oil is both volatile and flammable. Although the ooze is immune to fire and electricity damage, any exposure to either energy type, mundane or magical, causes it to ignite in an explosion that deals 5d6 points of fire damage to all creatures and objects in a 20-foot radius (Reflex DC 21 half). When lit, a roiling oil loses its nauseating film ability but its slam attack deals an extra 2d6 points of fire damage on a successful hit and the ooze gains the burn special attack (Reflex DC 21 negates). Both DCs are Constitution-based.

While ablaze, the roiling oil gives off smoke that creates concealment in the roiling oil's space and 5 feet beyond. This smoke functions like a fog cloud in the range indicated.

Water does not extinguish the flames, but any cold damage or a gust of wind or similar effect smothers the flames. Otherwise, a roiling oil burns for 1 minute before returning to its original state. While the ooze is ablaze, any additional fire or electricity damage extends the duration but doesn't cause additional explosions.