Vorus Cloud CR 2
XP 600
N Small ooze (air)
Init +3; Senses blindsight 120 ft.; Perception +2
DEFENSE
AC 13, touch 13, flat-footed 11 (+2 Dex, +1 size)
hp 14 (2d8+6)
Fort +3, Ref +3, Will +2;
Defensive Abilities incorporeal; Immune ooze traits; Resist cold 10, electricity 10
Weaknesses burn off, vulnerability to fire
OFFENSE
Speed fly 30 ft. (perfect)
Melee slam +2 (1d3+1+grab) or freezing touch +2 (1d4 Dex)
Space 5 ft.; Reach 5 ft.
Special Attacks coagulate (DC 14)
STATISTICS
Str 13, Dex 16, Con 16, Int -, Wis 14, Cha 1
Base Atk +1; CMB +1 (+4 grab); CMD 14 (cannot be tripped)
Skills Fly +6, Perception +2 Racial Modifiers +20 Disguise to look like a cloud
Feats hover, wingover
ECOLOGY
Environment any (Plane of Air)
Organization solitary or cumulovorus (see below)
Treasure none
SPECIAL ABILITIES
Burn Off (Ex): Intense heat can force a vorus cloud into its gaseous form. Whenever a coagulated vorus cloud takes fire damage, it must make a Fort save or lose its coagulation. The DC of this save is equal to 10 + the damage taken.
Coagulate (Ex): As a standard action, a vorus cloud can coagulate into a semi-solid ooze form. While coagulated, a vorus cloud loses the incorporeal ability, but gains a slam attack. A vorus cloud can return to its gaseous, incorporeal form as a standard action.
If a vorus cloud coagulates while already sharing a space with another creature, that creature makes a Reflex save or is automatically strangled and might begin drowning. The creature cannot speak or cast spells with verbal components, and loses its Dex bonus to AC.
Every round on its turn while under the effects of coagulation, the target gets an Escape Artist check to escape the coagulation. If it fails, it must make a DC 10 Constitution check or begin drowning (see Core Rulebook pg. 445). Every round that it is under the effect of coagulation, the DC of this Constitution check goes up by 1. The save DC is Constitution based.
Freezing Touch (Ex): As a standard action, a vorus cloud can make a melee touch attack that does 1d4 Dex damage.
Vorus clouds are predatory oozes in the form of clouds that hunt the wide open spaces of the Plane of Air.
Cumulovorus
While vorus clouds have been known to float about on their own, they are at their most dangerous when clumped into cumulovorus clouds. These cloud formations have been known to include hundreds and even thousands of vorus clouds, and can be imposing as an obstacle to pass or deadly if entirely surrounded. When vorus clouds travel together, they clump into a single much larger cloud. A cumulovorus pools together all hit points from each individual cloud. No single vorus cloud dies until all of these pooled hit points are depleted. Any effect that deals damage to multiple vorus clouds within a cumulovorus treats the cloud as a single creature for the purpose of determining points of damage dealt to the cloud as a whole. Two clouds can occupy a 5 foot cube. Thus, a Small creature can be subjected to 12 slam attacks when surrounded by a cloud, while a Medium creature can be subject to 17. While the cloud is coagulated, an Escape Artist check is necessary every round while surrounded. The DC does not increase after a successful check, but it does not reset either.
