Trill (Su): The frost worm can emit a noise that forces its prey to stand motionless. This sonic, mind affecting compulsion affects all creatures other than frost worms within a 100-foot spread. Creatures must succeed at a Will save (DC 17) or be stunned for as long as the worm trills, even if they are attacked. However, if attacked or violently shaken (a full-round action), a victim is allowed another saving throw. Once a creature has resisted or broken the effect, it cannot be affected again by that frost worm for one day. The effect's caster level is 14.

Cold (Ex): Frost worms' bodies generate intense cold, dealing 1d8 points of damage with their touch. Creatures attacking a frost worm unarmed or with natural weapons take cold damage each time their attacks hit.

Breath Weapon (Su): Cone of cold, 30 feet long, once per hour; damage 15d6, Reflex half DC 22. Opponents held motionless by the frost worm's trill get no saving throw.

Cold Subtype (Ex): Cold immunity; double damage from fire except on a successful save.

Death Throes (Ex): When killed, a frost worm turns to ice and shatters in an explosion that deals 12d6 points of cold damage and 8d6 points of piercing damage to everything within 100 feet (Reflex half DC 22).

Make Whole (Sp): Three workers together can repair an object as though with make whole cast by a 7th-level cleric. This is a full-round action for all three workers.

Heal (Sp): Eight workers together can heal a creature's wounds as though with cure serious wounds cast by a 7th-level cleric. This is a full-round action for all eight workers.

Hive Mind (Ex): All formians within 50 miles of their queen are in constant communication. If one is aware of a particular danger, they all are. If one in a group is not flat-footed, none of them are. No formian in a group is considered flanked unless all of them are.

Immunities (Ex): Formians have poison, petrification, and cold immunity.

Resistances (Ex): All formians have fire, electricity, and sonic resistance 20.

Poison (Ex): Sting, Fortitude save (DC 14); initial and secondary damage 1d6 temporary Strength.

Hive Mind (Ex): All formians within 50 miles of their queen are in constant communication. If one is aware of a particular danger, they all are. If one in a group is not flat-footed, none of them are. No formian in a group is considered flanked unless all of them are.

Immunities (Ex): Formians have poison, petrification, and cold immunity.

Resistances (Ex): All formians have fire, electricity, and sonic resistance 20.

Dominate Person (Su): Taskmasters can use dominate person on any creature as the spell cast by a 10th-level sorcerer (save DC 19), although the subject may be of any type and may be up to Large size. A single taskmaster can dominate up to four subjects at a time.

Dominated Creature (Ex): A taskmaster is never encountered alone: One dominated nonformian creature always accompanies it (choose or determine randomly any creature of CR 4).

Poison (Ex): Sting, Fortitude save (DC 15); initial and secondary damage 1d6 temporary Strength.

Telepathy (Su): Taskmasters can communicate telepathically with any intelligent creature within 100 feet.

Hive Mind (Ex): All formians within 50 miles of their queen are in constant communication. If one is aware of a particular danger, they all are. If one in a group is not flat-footed, none of them are. No formian in a group is considered flanked unless all of them are.

Immunities (Ex): Formians have poison, petrification, and cold immunity.

Resistances (Ex): All formians have fire, electricity, and sonic resistance 20.

Poison (Ex): Sting, Fortitude save (DC 20); initial and secondary damage 2d6 temporary Dexterity.

Spell-Like Abilities: At will-charm monster, clairaudience/clairvoyance, detect chaos, detect thoughts, magic circle against chaos, and teleport without error; 1/day-dictum and order's wrath. These abilities are as the spells cast by a 12th-level sorcerer (save DC 13 + spell level).

Hive Mind (Ex): All formians within 50 miles of their queen are in constant communication. If one is aware of a particular danger, they all are. If one in a group is not flat-footed, none of them are. No formian in a group is considered flanked unless all of them are.

Immunities (Ex): Formians have poison, petrification, and cold immunity.

Resistances (Ex): All formians have fire, electricity, and sonic resistance 20.

Spells: The queen casts arcane spells as a 17th-level sorcerer.

Spell-Like Abilities: At will: calm emotions, charm monster, clairaudience/clairvoyance, detect chaos, detect thoughts, dictum, divination, hold monster, magic circle against chaos, order's wrath, shield of law, and true seeing. These abilities are as the spells cast by a 17th-level sorcerer (save DC 15 + spell level).

Telepathy (Su): The queen can communicate telepathically with any intelligent creature within fifty miles whose presence she is aware of.

Hive Mind (Ex): All formians within 50 miles of their queen are in constant communication. If one is aware of a particular danger, they all are. If one in a group is not flat-footed, none of them are. No formian in a group is considered flanked unless all of them are.

Immunities (Ex): Formians have poison, petrification, and cold immunity.

Resistances (Ex): All formians have fire, electricity, and sonic resistance 20.

Plant: Immune to mind-influencing effects, poison, sleep, paralysis, stunning, and polymorphing. Not subject to critical hits.

Shriek (Ex): Movement or a light source within 10 feet of a shrieker causes the fungus to emit a piercing sound that lasts for 1d3 rounds. The sound attracts nearby creatures that are disposed to investigate it. Some creatures that live near shriekers learn that the fungus's noise means there is food nearby.

Plant: Immune to mind-influencing effects, poison, sleep, paralysis, stunning, and polymorphing. Not subject to critical hits.

Poison (Ex): Tentacle, Fortitude save (DC 14); initial and secondary damage 1d4 temporary Strength and 1d4 temporary Constitution.