The lavaworm looks as though it is made of living semi molten rock. It moves about like an inchworm, hunching its body up as it moves its end forward, and lowering its body as its head moves forward. The creatures have a large maw at either end, which periodically expels noxious gas smelling strongly of sulfur.

    Combat: These creatures never attack other creatures that exhibit at least the same temperature as their own (such as fire elementals), unless they are looking for a creature on which to lay their eggs, otherwise they attack anything cooler than itself that moves.

    Breath Weapon (Su): Every five rounds, the lavaworm can spew a great cloud of sulfuric gas in a 20 radius, those with in this cloud must make a Reflex saving throw DC 16 (for DMs who want to use bigger lavaworms use the following formula to determine save DC: 10 + ½ hit dice + constitution modifier). Those failing the save are blinded for 1d6 minutes. It is possible for an affected character to suffer blindness for certain number of minutes, only to fail another saving throw before those minutes are over, if so add the total number of minutes together to get the total duration of blindness.

    Burn (Ex): Those bitten by a lavaworm must succeed at a Reflex save or catch fire. The fire burns for 1d4 rounds (see Catching on Fire, page 86 of the Dungeon Master's Guide). The save DC varies with lavaworm's HD/Size (For the DM who what to be more accurate use the following formula: 10+ ½ hit dice + dexterity modifier). A burning creature can take a move-equivalent action to put out the flame.
    Creatures hitting a lavaworm with natural attacks must likewise make a reflex save to avoid catching fire.

    Quick Burn Chart for Lavaworm

	Lavaworm Size	Length	Weight	Burn Save DC
	Medium	8 feet	750 lb.	11
	Large	16 feet	6,000 lb.	12
	Huge	32 feet	48,000 lb.	16

    Burst of Speed (Ex): Once every five minutes the lava worm can muster up a movement rate of 50 for 1d4 rounds. It uses this burst for speed to run down its prey. Many creatures are surprised by this burst of speed (DM may decide to add –2 Circumstance Modifier to Spot check for purpose of surprise).

    Elemental: Immunte to poison, sleep, paralysis, and stunning. Not subject to critical hits.

    Fire Subtype (Ex): Fire immunity, double damage from cold except on a successful save.

    Heat (Ex): A lavaworm generates so much heat that its mere touch deals additional damage in addition to the possibility of catching fire (see Burn above).

In The Spheres
    Lavaworms are found only on firebodies, volcanos and other very hot areas. It is not likely most adventures will come across these creatures as the terrain will likely require magical protect to safely venture into.

Lavaworm, SPELLJAMMER, DUNGEONS & DRAGONS, D&D, ADVANCED DUNGEONS & DRAGONS, AD&D, the D&D logo, the AD&D logo, the d20 System logo and d20 are trademarks owned by Wizards of the Coast, Inc., a subsidiary of Hasbro, Inc., and are used with permission. All titles, and all proper nouns, including character names, locations, and named items are considered Product Identity per Section 1 of the Open Game License v1.0a and are exclusively owned by Wizards of the Coast, Inc.
©2002 Wizards of the Coast, Inc.

Compliance of Conversion Policy, Open Game License and the d20 System Trademark License:
Use of WIZARDS OF THE COAST® Product Identity including proper names and product titles is hereby permitted exclusively via this ESD Conversion Agreement. A current version of this policy can be obtained at: http://www.wizards.com/d20/conversionpolicy.asp

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To obtain a digital copy of the original source material this conversion is derived from, please link to: http://www.wizards.com/whatevertherightlinkshouldbe.asp."

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Lavaworm, © 1991Wizards of the Coast, Inc.
d20™ System, Conversion of Lavaworm ©2002, Mark Doolan
Image by Ron Pollard
Original Source: SJR2 Realmspace

    Notes on this Conversion: In this conversion I decided to make the lavaworm a elemental creature as it seemed to be the best choice. The toughest part ot the conversion was making the burst of speed that it has for 1d4 segments. While I really wanted to use the 'Melt Weapon' ability of the magmen for the lavaworm, it did not have this ability in 2E and neither the fire elemental nor maga paraelemental in 3rd Edition.