A spellcaster can create any form of frostfallen creature by casting animate dead upon the corpse to be animated and providing an amount of ice of equal weight, plus two blue topazes or turquoises worth at least 100 gp each. The creator can only create a number of Hit Dice of frostfallen creatures equal to the amount allowed by animate dead. Frostfallen creatures count against the number of Hit Dice of skeletons and zombies that can be created using animate dead.
“Frostfallen creature” is an acquired template that can be added to any corporeal creature (other than an undead), referred to hereafter as the base creature. A frostfallen creature uses the base creature's statistics and special abilities except as noted here.
CR: As base creature +1.
Alignment: Always neutral evil.
Type: The creature's type changes to undead and it gains the cold subtype. It retains any subtypes except for alignment subtypes (such as good) and subtypes that indicate kind (such as giant). It does not gain the augmented subtype. It uses all the base creature's statistics and special abilities except as noted here.
Armor Class: The natural armor bonus improves by +4.
Hit Dice: A frostfallen creature drops any HD gained from class levels and changes racial HD to d8s. Creatures without racial HD are treated as if they had 1 racial HD. A skeleton uses its Charisma modifier (instead of its Constitution modifier) to determine bonus hit points.
Weaknesses: Frostfallen creatures gain vulnerability to fire.
Speed: A winged frostfallen creature's maneuverability drops to clumsy. If the base creature flew magically, its fly speed is unchanged. Retain all other movement types.
Attacks: A frostfallen creature retains all the natural weapons, manufactured weapon attacks, and weapon proficiencies of the base creature. It also gains a slam attack that deals damage based on the frostfallen creature's size, but as if it were one size category larger than its actual size.
Special Attacks: A frostfallen creature retains all of the base creature's special attacks and also gains the following.
A frostfallen creature's body generates intense cold, dealing an amount of cold damage with its touch determined by its Hit Dice. Creatures attacking a frostfallen creature with unarmed strikes or natural weapons take this same cold damage each time one of their attacks hits.
Skills: A frostfallen creature loses all skill ranks possessed by the base creature and gains none of its own.
Feats: A frostfallen creature loses all feats possessed by the base creature and gains Toughness as a bonus feat.
Special Qualities: A frostfallen creature loses most special qualities of the base creature. It retains any extraordinary special qualities that improve its melee or ranged attacks. It also gains the following special quality.
The frostfallen creature notices and locates living creatures within 60 feet, just as if it possessed the blindsight ability.