From Pathfinder Society Scenario #1-09: Star-Crossed Voyages, which isn't enabled.

Greater Steel Mephit

CREATURE 4

Perception +12; darkvision, tremorsense (imprecise) 30 feet

Languages Petran

Skills Athletics +13

Str +5, Dex -2, Con +3, Int -2, Wis +2, 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 21; Fort +13, Ref +6, Will +10

HP 65, fast healing 4 (while within Paravaax's aura); Immunities bleed, paralyzed, poison, sleep

Fast Healing 4 (while within Paravaax's aura)

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

Speed 20 feet, burrow 20 feet, fly 15 feet

Melee Fist +13 (unarmed), Damage 2d8+5 bludgeoning

Arcane Innate Spells DC 20, attack +12; 3rd Meld into Stone; 2nd Enlarge (Self Only)

Breath Weapon (arcane, earth)

The greater steel mephit breathes shards of iron in a 15-foot cone that deals 3d6 slashing damage to each creature within the area (DC 19 basic Reflex save). Creatures who fail their save against this effect also take 1d6 bleed. The greater steel mephit can't use its breath weapon again for 1d4 rounds.

Pathfinder Society Scenario #1-09: Star-Crossed VoyagesOGL