Lurking Strangler (CR 2)
Alignment: Usually lawful evil
Initiative: +4 (Dex); Senses: all-around vision, darkvision 60 ft., Listen +5, and Spot +8
Languages: understand Beholder and Common, cannot speak
AC: 16 (+2 size, +4 Dex), touch 16, flat-footed 12
Hit Dice: 2d8+2 (11 hp)
Fort +1, Ref +4, Will +3
Speed: 5 ft., fly 20 ft. (good)
Space: 2 1/2 ft./0 ft.
Base Attack +1; Grapple -10
Attack: eye ray +7 ranged touch or lash +7 melee
Full Attack: 2 eye rays +7 ranged touch or lash +7 melee
Damage: Eye rays, lash 1d4-3
Special Attacks/Actions: eye rays, suffocate
Abilities: Str 5, Dex 19, Con 13, Int 4, Wis 10, Cha 10
Special Qualities: Flight
Feats: Alertness; Weapon Finesse
Skills: Hide +12, Listen +5, Search +1, and Spot +8
Advancement: 3-4 HD (tiny); 5-6 HD (small)
Organization: solitary or as pet/companion of a gauth or beholder
Monster Manual III
Eye rays (Su): each of a lurking strangler's two eye rays resembles a spell cast by a 3rd-level caster. One eye acts as the cause fear spell, and the other produces a sleep effect. Each effect is negated with a DC 11 will save. The save DCs are charisma-based.
Cause Fear: This ray works like the spell. It has a range of 30 feet.
Sleep: This ray works like the spell, except that is affects one creature with up to 4 hit dice. It has a range of 130 feet.
Suffocate (Ex): If a lurking strangler hits a helpless foe with its lash attack, it wraps itself around the victim's throat and begins to choke it. In the first round the victim falls unconscious (0 hit points). The following round, she drops to -1 hit points and is dying. In the third round, she suffocates and dies.
All-around vision (Ex): Lurking stranglers are exceptionally alert and circumspect. Their eyes and physiology give them a +4 racial bonus on spot checks and search checks, and they can't be flanked.
Flight (Su): a lurking strangler's body is naturally buoyant. This buoyancy allows it to fly at a speed of 20 feet. This buoyancy also grants it a permanent feather fall effect (as the spell) with personal range.
A lurking strangler primarily uses its eye rays to attack. It can use its entire body to lash at an adjacent foe. However, it prefers to keep its distance and let its eye rays defeat its enemies. Once its victims are asleep, it will coil itself around a foe and choke it to death.