So, here it is, Labyrinth Lord style (adapted from the posts on my blog)
When summoning elementals in the B/X or Labyrinth Lord game, there is a chance of summoning a specific form of elemental suited to the environment in question. The DM determines what the most likely subtype to appear will be. There is a 50% chance that the appropriate subtype appears instead of a standard elemental of the appropriate power. A spellcaster can learn (typically via a quest or magical tome) how to summon a particular subtype of elemental. In this case, if the proper environment is present, the summoning will always bring forth the desired subtype. A spellcaster can learn how to summon a number of subtypes equal to 1/2 his level.
There are 4 basic types of Elementals, typically determined by their summoning source.
Lesser Elemental (Summoned by Staff) – 8 HD, AC 2, 1d8 damage
Greater Elemental (Summoned by Devices) – 12 HD, AC 0, 2d8 damage
True Elemental (Summoned by Spells) – 16 HD, AC -2, 3d8 damage
Legendary Elemental (Summoned by Ritual) – 20 HD, AC -4, 4d8 damage
Elemental subtypes are treated identically to standard elementals, but have one additional power as indicated below. Unless otherwise indicated, any spell-like abilities are treated as being cast by a spellcaster with a level equal to the elemental’s Hit Dice. Some spell effects are from the Advanced Edition Companion.
Air Elemental Subtypes
Standard air elementals take the form of a whirlwind 2′ tall per and 2′ diameter per hit die. They fly at a movement rate of 360′ (120′). Creatures of (1/4 elemental’s hit dice) or fewer hit dice are carried away if they are within the area of the elemental if they fail a save versus death. Damage from air elementals is increased by 1d8 points against aerial targets.
Blizzard - 1d6 cold damage / round in a 2′ radius / HD
Zephyr - doubles or halves flight speeds in a 20′ radiums / HD
Storm - call lightning once per day
South Wind - ends all hostile air effects (storms, cloudkill, wall of fog, etc) within 5′ / HD
Pestilence - cause disease to all touched
Fog - fog cloud 1 / turn
Howling - temporarily deafens all within 2′ / HD, fear to those under 4 HD
Gust - gust of wind 1 / turn
Earth Elemental Subtypes
Standard earth elementals take the form of a humanoid, 1′ tall per hit die. They move at a rate of 60′ (20′), cannot cross water wider than 1′ / HD, but ca move through earth or stone unimpeded. Damage from earth elementals is increased by 1d8 points against targets standing on the ground.
Plains – reduce enemy ground-based movement to 1/3 within 20′ / HD
Dirt - lesser move earth at will
Desert - 1d6 heat and abrasion damage / round in a 2′ radius / HD
Mud - transmute rock to mud 1 / turn
Graveyard - animate dead 1 / turn
Dungeon - melee targets must save versus paralysis or be chained to the elemental and must move with it
Sand - blur 1 / turn
Mountain - can attack (without the normal damage bonus for target type) at a range of 5′ / HD by hurling boulders
Crystal - mirror image 1 / turn, colour spray 1 / turn
Metal - attacks are wounding, dealing 1 point of damage per round until bound.
Fire Elemental Subtypes
Standard fire elementals take the form of a pillar of flames 1′ tall and 1′ diameter per hit die. They move at a movement rate of 120′ (40′) and cannot cross water wider than 1′ / HD. Damage from fire elementals is increased by 1d8 points against targets with cold attacks.
Cinder – incendiary cloud 1 / turn
Lava - 1d6 heat damage / round to all within 1′ radius / HD, form is that of an earth elemental instead of a fire elemental.
Forge - heat metal on all weapons that strike it and all armour struck by it.
Pyre - +1d8 damage versus undead and magic users
Tinder - flashfire 1 / round
Hearth - resist cold 10′ radius / HD
Flare - Hits cause blindness unless a save vs death is made; casts pyrotechnics 1 / turn
Water Elemental Subtypes
Standard water elementals take the form of a mass of waves 1/2′ tall per and 2′ diameter per hit die. They move at a rate of 60′ (20′) and swim at a rate of 180′ (60′), although they cannot travel more than 60 feet from a source of water. Targets standing in or submerged in water suffer an additional 1d8 damage from the attacks of a water elemental.
Ice – ice storm 1 / turn
Bog - attacks warp wood on target and possessions
River - part water or lower water 1 / turn
Sweetwater - purify food and water 2′ radius / HD
Blood - bane (reverse of bless) on all living opponents in 2′ radius / HD
Whirlpool - struck opponents must save versus paralysis or be stuck to the elemental
Sewer - creatures within 2′ / HD must save versus poison or suffer -2 to hit in combat from nausea
Geyser - 8d6 damage blast of boiling water 5′ wide by 5′ / HD long 1 / turn
Bile - attack destroys leather and cloth if save versus magic is failed
Wood Elemental Subtypes
Standard wood elementals take the form of a treant-shaped humanoid 1 1/2′ tall per hit die. They move at a rate of 90′ (30′) and are never slowed by vegetation. Targets standing on grass, plants or wood suffer +1d8 damage from wood elemental attacks.
Thorn – can attack at a range of 5′ / HD (base damage only)
Forest - entangle 1 / turn
Fungal - stinking cloud 1 / turn
Rose - allure (towards the controller) all within 5′ radius / HD
Gallows - +1d8 damage to any creature with less than 1/2 hit points remaining
Moss - attack as a rust monster 1 / turn
Vine - ranged attack (2′/HD) draws target into contact with the elemental, further attacks don’t roll to hit.
Rot - attacks warp wood on target and possessions
