it's the art of turning yourself into an animal orgiving yourself animal like traits
you drink a mixture of honey dew and a pint of dolphins milk (I mean that literally you need real dolphins milk)
the incantation is as follows i will not post the Latin version mostly because people would take this spell for granted and use it in unsavory ways
Bestia Animo,
My human shape shall go.
Bestio Betietta,
It shall be for the better.
Bestio Anifornum,
I shall turn into a [Here, shout out the name of animal]!