Sculptors potion

This potion can be used to create some weird anatomy. With this potion you can splash 2 people (or take a drink of it yourself and splash someone). The bodies will then feel soft like clay and allow the 2 people to exchange body parts. Taking a body part off someone is completely painless! It only feels like a part of them is squished or pulled gently then nothing. Once a body part is removed they cannot feel or control said body part and any part not connected to the head (or wherever your brain is) in some way has the same effect. Once a somewhat short and unknown amount of time passes the final effects of the potion are shown. If you're just a head you'll regrow the body as it was before. If you've got a new arm then said arm will change to your species and the parts required to move it will form making it almost as if your body was born with said arm.

Enchanted Sculptors potion
The enchanted version of this potion is more powerful and allows you to actually sculpt the body as if it was clay rather then just taking or replacing parts. However it can only be used twice and will only last a few days before becoming magical sludge.