>>35980836
>TF bad end
Anon pls
The GURPS magic module has polymorph spells/rules. Basically there's no initial save but every consecutive day you spend in animal form you have to make a save or lose a point of intelligence as your mind becomes more animalistic. If it reaches the standard intelligence score for a creature of your form then your mind fully shifts and lose your memories. I couldn't hope to explain why but that's apparently my fetish.