Lavabriar (CR 2)

Medium Plant (Fire)
Alignment: Always neutral
Initiative: +3 (Dex); Senses: low-light vision and tremorsense 60 ft.

AC: 14 (+3 Dex, +1 natural), touch 13, flat-footed 11
Hit Dice: 2d8+12 (21 hp)
Fort +9, Ref +3, Will -4
Speed: 5 ft.
Space: 5 ft./5 ft.
Base Attack +1; Grapple -2
Attack: Tendril +4 melee (1d6-3) or lava spurt +4 ranged touch (2d6 fire)
Full Attack: 4 tendrils +4 melee (1d6-3) or lava spurt +4 ranged touch (2d6 fire)
Damage: -
Special Attacks/Actions: Lava spurt
Abilities: Str 4, Dex 16, Con 22, Int -, Wis 2, Cha 1
Special Qualities: Immunity to fire, plant traits, vulnerability to cold
Feats: Weapon Finesse[B]
Skills: -
Advancement: 3-6 HD (Medium)
Climate/Terrain: Warm mountains (volcanoes)
Organization: Solitary, pair, patch (3-4), or grove (5-12)
Treasure: 1/10th coins; 50% goods; 50% items (no flammable objects)

Source: Web

This plant has a thick tangle of black thorny fronds growing from a central bulbous mass. A single short stalk emerges from the center of this mass, ending in a large black flower that glows a faint red.

Lavabriars grow on the lower slopes of volcanoes, along active faultlines, or anywhere that pockets of magma are trapped near the surface of the world. The hardy plants thrive in regions where the sun is often blocked out by clouds of ash in the sky, and they actually draw their nourishment from the lava pockets below via a network of heat-resistant roots. If volcanic activity in an area subsides, the lavabriars can creep off to a new area, but they usually remain immobile when not in combat.

Fire Subtype

A creature with the fire subtype has immunity to fire. It has vulnerability to cold, which means it takes half again as much (+50%) damage as normal from cold, regardless of whether a saving throw is allowed, or if the save is a success or failure.