From Pathfinder Society Scenario #2-19: Enter the Pallid Peak, which isn't enabled.

Scorched Earth Mephit

CREATURE 1

Perception +3; darkvision, tremorsense (imprecise) 30 feet

Languages Petran, Pyric

Skills Athletics +5, Stealth +2

Str +3, Dex -1, Con +2, Int -2, Wis +0, Cha -1

Tremorsense (Imprecise) 30 feet

Tremorsense allows a monster to feel the vibrations through a solid surface caused by movement. It is an imprecise sense with a limited range (listed in the ability). Tremorsense functions only if the monster is on the same surface as the subject, and only if the subject is moving along (or burrowing through) the surface.

AC 16; Fort +8, Ref +4, Will +3

HP 17, Fast Healing 2 (while underground); Immunities bleed, fire, paralyzed, poison, sleep; Weaknesses cold 3

Fast Healing 2 (While Underground)

A monster with this ability regains the given number of Hit Points each round at the beginning of its turn.

Speed 20 feet, fly 15 feet, swim 20 feet; magma swim

Melee Fist +8 (unarmed), Damage 1d6+3 bludgeoning

Arcane Innate Spells DC 17, attack +9; 2nd Enlarge (Self Only)

Breath Weapon (arcane, earth)

The scorched earth mephit breathes rocks in a 15-foot cone that deals 2d4 fire damage and 1d4 persistent fire damage to each creature within the area (DC 17 basic Reflex save).

The scorched earth mephit can't use Breath Weapon again for 1d4 rounds.

Magma Swim

A scorched earth mephit's swim Speed functions only when the elemental is Swimming through magma or molten lava.

Pathfinder Society Scenario #2-19: Enter the Pallid PeakOGL