Atavistic Reversion
System: Pathfinder | SRD
Level: 5
School: transmutation
Casting time: 5 hours
Components: V, S, M (musky incense worth 500 gp), F (crown made of claws and fangs), SC (up to 8)
Skill checks: Bluff DC 33, 1 check; Knowledge (nature) DC 33, 1 check; Handle Animal DC 33, 1 check; Intimidate DC 33, 1 check; Survival DC 33, 1 check
Range: touch
Duration: instantaneous
Saving throw: Fortitude negates
Spell resistance: yes
Backlash: All casters suffer 1 temporary negative level and become exhausted.
Failure: The primary caster gains the mind and body of a Tiny animal, as if she failed both saves against baleful polymorph .
The primary caster lights a bonfire surrounded with incense, steps into the fire, places the crown upon his brow, and lets forth a primal howl. Ghostly images of beasts swirl through the air as the casters join in a spectral hunt. As the ritual progresses, all humanoids in the ritual’s area of effect, including the casters, regress in appearance to resemble their primal animalistic ancestors. Initially, these features have no mechanical effects, and they disappear if the ritual fails. If the ritual succeeds, the casters and those who succeed at a Fortitude save return to normal, while all other humanoids regress further. They gain a +4 size bonus to Strength, a +4 natural armor bonus to AC, and a bite attack (if they already had one, it counts as if they were one size larger). If their Intelligence is greater than 2, it becomes 2, and they can’t cast spells, use other special abilities that require Intelligence, speak, and wield manufactured weapons. The only skill checks they can attempt are Acrobatics, Climb, Fly, Perception, Stealth, and Swim. The effects on a creature can be removed with break enchantment, limited wish, miracle, remove curse, or wish. Removing the penalties also removes the benefits.
Source: Villain Codex pg. 140