Terran Fly Swarm

Terran Fly Swarm                                                                CR 2

XP 600

N Fine Vermin (Swarm, Earth)

Init +4; Senses Darkvision 60ft; Perception +1

DEFENSE
AC 22, touch 22, flat-footed 18 (+8 size, +4 Dex)

hp 8 (3d8-6)

Fort +1, Ref +5, Will +2

Defensive Abilities Swarming Mass

Immunities Critical Hit, Flanking

OFFENSE
Speed 5 ft., burrow 5 ft.

Melee Swarm (1d6)

Space 0 ft.; Reach 0 ft.

Special Attacks Distraction (DC 9), Hinder Spellcasting

STATISTICS
Str 2, Dex 18, Con 6, Int 0, Wis 12, Cha 3

Base Atk +2; CMB -10; CMD 4

SQ Vermin Traits, Amorphous Anatomy

SPECIAL ABILITIES
Swarm Attack (Ex) 

A Terran Fly Swarm deals 1d6 automatic damage to any creature whose space it occupies at the end of its move, with no attack roll needed. Swarm attacks are not subject to a miss chance from concealment or cover.

Distraction (Ex) 

Whenever a Terran Fly Swarm damages a creature with a natural attack, it must make a DC 9 Fortitude save or become nauseated for 1 round.

Hinder Spellcasting (Ex) 

Whenever a creature attempts to cast a spell in a Terran Fly Swarm's space or an area it threatens, the caster must make a concentration check of DC 20 + spell level. Using skills that involve patience and concentration requires a DC 20 Will save.

Swarming Mass (Ex) 

A Terran Fly Swarm's body is composed of a swarming mass of smaller creatures, which means it has no front or back and no discernable anatomy, so it is not subject to critical hits or flanking. A swarm made up of tiny creatures takes half damage from slashing and piercing weapons. A swarm composed of Fine or Diminutive creatures is immune to all weapon damage. Reducing a swarm to 0 hit points or less causes it to break up, though damage taken until that point does not degrade its ability to attack or resist damage. Swarms are never staggered or reduced to a dying state by damage. Also, they cannot be tripped, grappled, or bull rushed, and they cannot grapple an opponent.

A swarm is immune to any spell or effect that targets a specific number of creatures (including single-target spells such as disintegrate), with the exception of mind-affecting effects if the swarm has an Intellighence score and a hive mind. A swarm takes half again as much damage (+50%) from spells or effects that affect an area, such as splash weapons and many evocation spells.Swarms made up of Diminutive or Fine creatures are susceptible to high winds, such as those created by a gust of wind spell. For purposes of determining the effects of wind on a swarm, treat the swarm as a creature of the same size as its constituent creatures. A swarm rendered unconscious my means of nonlethal damage becomes disorganized and dispersed, and does not reform until its hit points exceed its nonlethal damage.

Swarms do not threaten foes and do not make attacks of oppotunity. A swarm has 0ft reach, like its component creatures. When a swarm moves into a creature's space to attack, it provokes an attack of oppotunity as normal.

Vermin Traits

This type includes insects, arachnids, other arthropods, worms, and similar invertebrates.

-Mindless: No Intelligence score, and immunity to all mind-affecting effects (charms, compulsions, morale effects, patterns, and phantasms). Mindless creatures have no feats or skills. A vermin-like creature with an Intelligence score is usually either an animal or a magical beast, depending on its other abilities.

-Darkvision 60 feet.

-Vermin breathe, eat, and sleep.

Amorphous Anatomy (Ex) 

A Terran Fly Swarm's vital organs shift and change shape and position constantly. This grants it a 50% chance to ignore additional damage caused by critical hits and sneak attacks, and grants it immunity to polymorph effects (unless the Terran Fly Swarm is a willing target). A Terran Fly Swarm automatically recovers from physical blindness or deafness after 1 round by growing new sensory organs to replace those that were compromised.