XP 800
N Small outsider (fire)
Init +6; Senses darkvision 60 ft.; Perception +6

AC 17, touch 14, flat-footed 14 (+2 Dex, +1 dodge, +3 natural, +1 size)
hp 19 (3d10+3); fast healing 2 (works only in boiling water or steam)
Fort +2, Ref +5, Will +3
DR 5/magic Immune fire
Weaknesses vulnerability to cold

Speed 30 ft., fly 40 ft. (average)
Melee 2 claws +5 (1d3+1)
Special Attacks breath weapon (15-foot cone, effect based on type, Reflex DC 13 for half)
Spell-Like Abilities (CL 6th)
1/day—summon (level 2, 1 mephit of the same type 25%),  blur 1/hour

Str 13, Dex 15, Con 12, Int 6, Wis 11, Cha 14
Base Atk +3; CMB +3; CMD 15
Feats Dodge, Improved Initiative
Skills Bluff +8, Fly +10, Perception +6, Stealth +12
Languages Common, one appropriate elemental language (Aquan, Auran, Ignan, or Terran)

Breath Weapon (Su)

Each type of mephit can unleash a particular breath weapon every 4 rounds as a standard action. The DC is Constitution-based and includes a +1 racial bonus.

The breath weapon of a steam mephit is a cone of steam that deals 1d4 fire damage. The scalding water also causes living creatures to be sickened for 3 rounds. A Reflex save halves the damage and negates the sickened effect.

Boiling Rain (Su)

Once per day a steam mephit can create a rainstorm of boiling water in a 20-foot-square area. Living creatures within the area take 2d6 points of fire damage (Fortitude DC 14 half; caster level 6th). This ability is the equivalent of a 2nd-level spell.