Riftcreeper

This slithering mass of bubbling red ooze extrudes a nest of long, thin tendrils, as if tasting the air in search of prey.

Riftcreeper (CR 15)

Gargantuan Ooze (Extraplanar)
Alignment: Chaotic Evil
Initiative: +12
Senses: Blindsight 60 feet, Tremorsense 120 feet; Perception +3
Speed: 30 feet, Climb 30 feet, Swim 20 feet ( gelatinous surge)
Space: 20 feet

Defense

Armor Class: 30, touch 14, flat-footed 22 (+8 Dex, +16 natural, -4 size)
Hit Points: 217 (15d8+150) Fast Healing 10
Saving Throws: Fort +15, Ref +13, Will +8
adaptive defenses
Immunity: acid, ability damage, ability drain, exhaustion, fatigue, ooze traits

Offense

Melee: 2 slams +22 (4d6+14 plus 2d4 acid and Grab)
Reach: 20 feet
Ranged: 6 strands +15 touch (2d4 acid and attach)
Special Attacks: Constrict (slam, 4d6+14 plus 2d6 acid), Pull (strand, 20 feet)
Spell-Like Abilities (CL 15th; Concentration +15):

Constant- Feather Fall

Statistics

Str	Dex	Con	Int	Wis	Cha
39 (+14)	27 (+8)	30 (+10)	7 (-2)	16 (+3)	10 (+0)

Base Attack Bonus: +11
CMB +29 (+31 Bull Rush, +33 Grapple)
CMD 47 (49 vs. Bull Rush, can't be tripped)
Feats: Awesome Blow, Combat Reflexes, Powerful Maneuvers, Improved Initiative, Improved Vital Strike, Vital Strike, Weapon Focus (slam)
Skills: Climb +37, Swim +22
Languages: Abyssal (cannot speak)

Special Abilities

Adaptive Defenses (Su)

After being damaged by any magical effect that deals cold, electricity, fire, or sonic damage, a riftcreeper's body instantly adapts to become immune to that form of energy. A riftcreeper can only adapt to one of those four types of energy at a time-if it adapts to a new energy type, it loses its immunity to the previous type. Otherwise, the immunity lasts for 1 hour.

Gelatinous Surge (Ex)

Once per minute as a standard action, a riftcreeper can extrude a protoplasmic tendril of ooze to attach to any vertical surface within 120 feet. It can then transfer its entire bulk along that tendril as part of that move action to change its location to the surface to which it's now attached. This movement does not provoke attacks of opportunity. Any creatures along its line of travel are subjected to a bull rush attempt.

Strands (Ex)

A riftcreeper can extend up to six thin, sticky strands from its body at a time as a standard action, launching them to a maximum range of 120 feet. These attacks resolve as ranged touch attacks. On a hit, a strand deals 2d4 points of acid damage to its target and attaches to the creature. These strands are quite strong, but any amount of slashing damage severs them (a strand has AC 25). As long as a strand remains attached to a target, that creature takes an additional 2d4 points of acid damage at the start of its turn. A riftcreeper can automatically absorb the strands into its body if it uses its gelatinous surge ability (and, in doing so, it releases any attached creatures).

Ecology

Environment: Any Mountain
Organization: solitary
Treasure: standard

Heaving masses of unnatural protoplasm known as riftcreepers prowl the Worldwound's shattered canyons. Despite their name, these intelligent, malevolent oozes are quite agile and swift, slithering up and down canyon walls or swimming through even the foulest water.
Natives of the Abyss, riftcreepers have adapted disturbingly well and quickly to the Worldwound. Although smart enough to understand Abyssal, riftcreepers have little interest in conversing with their food.