I will help

"You want to modify Intelligent creatures?" Evergreen thought for a few seconds and then nodded, "...Yes, you can, or more precisely, I can do it if you ask me after you become my owner, but everything has a price, and making big requests like this entails a penalty, and often the penalty will be that you will not be able to ask for anything from me again for a certain period... Let me explain to you how this will go: The change occurs by smoothly implanting the variable molecules into the body of the intelligent creature and waiting for the changes to appear on it slowly so that complications do not occur. Of course, it is preferable to implant these molecules in the embryos so that they are born with this new ability, but it can also be implanted in your body or the body of anyone you want if you want, but this will greatly increase the penalty."