There is a Legacy version
here.
Bestial Curse
[two-actions] Spell 4Concentrate Curse Manipulate Polymorph Source Player Core 2 pg. 240Traditions arcane,
occult,
primalDeity HaagentiRange touch;
Targets 1 living humanoid
Saving Throw Fortitude;
Defense Fortitude;
Duration varies
You tap into the target's inner being and curse it to become a bestial version of itself. The effect is based on its Fortitude save.
Critical Success The target is unaffected.
Success The target's body gains minor bestial features. Its insides churn as they partially transform, causing it to be
clumsy 1 for 1 round. When it recovers from the clumsy condition, its features revert to normal, and the spell ends.
Failure The target transforms into a bestial form for 1 hour. The target becomes clumsy 1 and gains weakness 1 to
silver. It gains a claw, hoof, horn, or jaws Strike (your choice) that uses the target's unarmed Strike statistics except that the damage type changes to bludgeoning, piercing, or slashing, as appropriate. Whenever the target attempts to use any
manipulate action, it must succeed at a DC 5 flat check or the action is lost.
Critical Failure As failure, but the duration is unlimited.