Naga, Sinomen - Constrictor (CR 3)

Huge Humanoid (Reptilian)
Alignment: Usually lawful neutral
Initiative: +0

AC: 12 (-2 size, +4 natural), touch 8, flat-footed 12
Hit Dice: 4d8+16 (34 hp)
Fort +5, Ref +4, Will +6
Speed: 20 ft.
Space: 15 ft./15 ft.
Base Attack +3; Grapple +7
Attack: Slam +7 melee
Full Attack: Slam +7 melee
Damage: Slam 1d6+7
Special Attacks/Actions: Improved grab, constrict 1d6+7
Abilities: Str 20, Dex 11, Con 18, Int 13, Wis 16, Cha 13
Special Qualities: Naga qualities
Feats: Iron Will; Skill Focus (heal)
Skills: Heal +13, Knowledge (arcana) +8, and Knowledge (religion) +8
Advancement: By character class
Climate/Terrain: Temperate and warm forest
Organization: Solitary, pair, or band (3-6)
Treasure/Possessions: Standard

Source: Oriental Adventures

Improved Grab (Ex): To use this ability, the constrictor mist hit with its slam attack. If it gets a hold, it can constrict.

Constrict (Ex): A constrictor naga deals 1d6+7 points of damage with a successful grapple check against Large or smaller creatures. It can deal normal or subdual damage as it desires, with no grapple check penalty in either case.

Telepathy (Ex): Nagas are all part of a communal consciousness they call the Akasha. This shared consciousness facilitates communication between nagas near and far, and contains the memories of their entire species. A group of nagas within 30 feet of each other are in constant communication. If one is aware of a particular danger, they all are. If one in a group is not flat-footed, none of them are. No naga in a group is considered flanked unless all are.

Taint Immunity (Ex): All nagas are immune to the Shadowlands Taint. They can still be harmed by effects such as the cloud of Taint spell, but they can never have a Taint score.

Alternate Form (Su): A female naga can transform her serpent tail into humanlike legs, as if using the polymorph self spell. Her size becomes Medium-size (regardless of her original size), and her speed becomes 30 feet (and she loses any swim speed she may have possessed). Changing form in this manner is a full-round action.

Danger Sense (Ex): Cobras retain their Dexterity bonus to AC (if any) regardless of being caught flat-footed or struck an invisible attacker. (They still lose their Dexterity bonus if immobilized.)

Constrictors are loath to enter into battle, since their role among the nagas is that of a religious leader and speaker of the communal mind. When forced into combat, constrictors often strike to subdue, crushing foes to unconsciousness within their enormous serpentine coils.

Reptilian Subtype

These creatures are scaly and usually cold-blooded. The reptilian subtype is only used to describe a set of humanoid races, not all animals and monsters that are truly reptiles.