Fiendish Flora: Belial's Breath [New Monster]

Today I'm kicking off a series of plant monsters, because - well frankly, because when I was walking yesterday some ideas started popping into my head and now I'm going to flesh them out and use them, by golly. So - a plant monster a day until I run out of ideas.

BELIAL'S BREATH
Large plant, neutral (N), non-intelligent; pit (1d6)

HD 4
AC 12 (vines have AC 13)
ATK 6 vines (1d4 + 1d6 fire)
MV 0
SV F10 R17 W14
XP 400 (CL 5)

Belial's breath, also called salamander vine, is a monstrous plant that grows in volcanic regions, sending tap roots deep into the earth that tap into pockets of heat. The plant appears as a clump of vines that range in length from 4 to 8 feet long. The vines are about 1 inch in diameter and black. They support large leaves that are black on top and crimson on the bottom. The plant produces small yellow flowers that exude a sulfurous smell.

The vines themselves are covered in a tar-like substance that is both sticky and flammable. When the vines detect, by tremors in the ground, the nearness of a creature they snake out and attempt to grab the creature. The stickyness of the vines give them a +2 bonus to grapple attacks. If a grab is successful, the vine bursts into flame. This flame deals 1d6 points of fire damage to its victim as well as to the vines themselves. Each vine has 3d6 hit points; when a vine's hit points are reduced to 0 by the flame or any other source, it is severed from the plant. The plant's hit point total is not reduced by damage sustained by the vines. To kill the plant, one must deal damage to the large, crimson bulb that lurks beneath the soil and from which the vines emanate.

Special: Resistance to fire