Vasuthant (CR 2)

Small Undead
Alignment: Always chaotic evil
Initiative: +3 (Dex); Senses: blindsight, darkvision 60 ft., Listen +4, and Spot +5
Languages: No language

AC: 17 (+1 size, +3 Dex, +3 natural), touch 14, flat-footed 14
Hit Dice: 2d12+4 (17 hp)
Fort +0, Ref +3, Will +4
Speed: Fly 30 ft. (perfect)
Space: 5 ft./5 ft.
Base Attack +1; Grapple +1
Attack: Slam +2 melee
Full Attack: Slam +2 melee and up to 4 enervating crushes
Damage: Slam 1d4, enervating crush 1d4 plus 1d4 Str
Special Attacks/Actions: Enervating crush, improved grab, reality distortion
Abilities: Str 10, Dex 16, Con -, Int 4, Wis 12, Cha 14
Special Qualities: +2 turn resistance, immunity to acid and cold, immunity to light, resistance to fire 5 and electricity 5, trap light, undead traits, unholy toughness
Feats: Flyby Attack; Improved Grapple
Skills: Hide +9*, Listen +4, and Spot +5
Advancement: 3-5 HD (Small); 6-9 HD (Medium); 10-16 HD (large); 17-25 HD (Huge); 26-34 HD (Gargantuan); 35-48 HD
Climate/Terrain: Any
Organization: Solitary
Treasure/Possessions: None

Source: Monster Manual III

Enervating Crush (Su): A successful grapple attempt by a vasuthant against a living creature of the same size or smaller pulls the victim into the center of the vasuthant. In that round and every round thereafter, a grappled victim takes 1d4 points of damage plus 1d4 points of Strength damage. A creature reduced to 0 Strength by a vasuthant dies. This is a negative energy effect.

Every point of Strength damage dealt by a vasuthant heals the creature of 1 point of damage, or gives it 1 temporary hit point if the creature is at full normal hit points. These temporary hit points last for 10 minutes.

A vasuthant can grapple with one creature of its size, or can simultaneously grapple one or two creatures one size smaller or up to four creatures two or more sizes smaller. Creatures that become pinned are suspended inside the vasuthant while their life energy is crushed out of their bodies.

The use of its enervating crush ability does not prevent a vasuthant from making slam attacks or using its spell-like abilities.

Improved Grab (Ex): To use this ability, a vasuthant must first hit with its slam attack. It can then attempt to start a grapple as a free action without provoking attacks of opportunity. If it wins the grapple check, a vasuthant immediately employs its enervating crush attack.

Reality Distortion (Ex): A vasuthant has limited influence over the forces of time and reality. Three times per day (but only once per round), a vasuthant can take a free action to reroll any unfavorable die roll or force its opponent to reroll a favorable die roll. The vasuthant must accept the result of the reroll.

Immunity to Light (Ex): Unlike many other undead creatures, a vasuthant is immune to any harmful effects of light, either natural or magical. All cleric spells of the Sun domain as well as other spells with the light descriptor (such as daylight) produce no adverse effects on a vasuthant.

Trap Light (Ex): A vasuthant effectively absorbs nearby magical and non-magical light, creating a 60-foot emanation of shadow. All creatures within this area, including the vasuthant, gain concealment. Creatures with low-light vision or darkvision can see normally within the area of the emanation, light sources within the area are suppressed, not dispelled. If a vasuthant moves out of range before the light source's duration expires, the light source illuminates again (though its illumination still cannot extend within the area of the vasuthant's trap light effect).

Unholy Toughness (Ex): A vasuthant gains a bonus to its hit points equal to its Charisma modifier x its Hit Dice. Skills: Vasuthants have a +2 racial bonus on listen checks and Spot checks. A vasuthant gains a +4 racial bonus on Hide checks in areas of shadowy illumination. In areas of bright illumination, it rakes a -4 penalty on Hide checks.

A vasuthant desires to feed off the positive energy of every living thing it encounters. In every round, the creature attempts to use its improved grab ability to initiate an enervating crush attack.

Vasuthants are shadowy, undead abominations. These life-hungry creatures vary greatly in size and power, each one growing larger as it sucks in more life energy. Smaller vasuthants appear as shadowy clouds, while larger varieties are colossal spheres of pitch-black nothingness that can suck up nearby light, sap strength, and manipulate gravity and time. Vasuthants possess immunity or resistance to most forms of energy.

A Small vasuthant is about 2 feet in diameter. As it advances in Hit Dice and becomes larger, its diameter increases to 5 feet at Medium size, 10 feet at large size, 15 feet at Huge size, 20 feet at Gargantuan size, and 30 feet at Colossal size. Vasuthants are weightless and know no languages.