Aukashungi Swarm

Greater Darkvision — A creature with greater darkvision can see perfectly well in areas of darkness and dim light, though such vision is in black and white only. A creature with greater darkvision can see through even forms of magical darkness.

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.

Burrowing Agony — The swarm deals 4d6 piercing damage and 2d4 bleed to every creature in its space (DC 29 Reflex save). The first time per round that a creature is affected by an aukashungi swarm's Burrowing Agony, the creature is also exposed to expeditious evolution.

Expeditious Evolution (curse, disease) — This affliction can't be reduced below stage 1, nor the damage from it healed, until successfully treated with Cleanse Affliction or a similar effect; the affliction can then be removed as normal for a disease.

Saving Throw DC 27 Fortitude

Stage 1 The aukashungi swarm chooses two of the victim's ability modifiers (such as Strength and Charisma). The victim gains a +1 status bonus to any skill checks that use those ability modifiers. The victim takes a -1 status penalty to all other skill checks (1 day)

Stage 2 The status penalty increases to -2 (1 day)

Stage 3 The status bonus increases to +2, and the penalty increases to -3 (1 day)

Stage 4 The status penalty increases to -4 (1 day).